![Sekhar Nori](/assets/img/avatar_default.png)
The Sitara AM17x SoCs from TI are an OMAP-L137 pin-to-pin compatible ARM9 microprocessor offering from TI. The Sitara AM18x SoCs from TI are an OMAP-L138 pin-to-pin compatible ARM9 microprocessor offering from TI. More information about these processors available at: www.ti.com/am1x Because of their compatibiliy with OMAP-L1x, the kernel support for OMAP-L1x is fully relevant to AM1x processors. This patch updates the Kconfig prompt and help text to include the AM1x part names to help users select configurations required for these parts easily. Also, the hardware information that shows up in /proc/cpuinfo is updated to show applicability of the respective OMAP-L1x EVMs for AM1x parts. Signed-off-by: Sekhar Nori <nsekhar@ti.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
608 lines
15 KiB
C
608 lines
15 KiB
C
/*
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* TI DA830/OMAP L137 EVM board
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*
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* Author: Mark A. Greer <mgreer@mvista.com>
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* Derived from: arch/arm/mach-davinci/board-dm644x-evm.c
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*
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* 2007, 2009 (c) MontaVista Software, Inc. This file is licensed under
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* the terms of the GNU General Public License version 2. This program
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* is licensed "as is" without any warranty of any kind, whether express
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* or implied.
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*/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/console.h>
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#include <linux/interrupt.h>
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#include <linux/gpio.h>
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#include <linux/platform_device.h>
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#include <linux/i2c.h>
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#include <linux/i2c/pcf857x.h>
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#include <linux/i2c/at24.h>
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#include <linux/mtd/mtd.h>
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#include <linux/mtd/partitions.h>
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#include <asm/mach-types.h>
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#include <asm/mach/arch.h>
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#include <mach/cp_intc.h>
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#include <mach/mux.h>
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#include <mach/nand.h>
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#include <mach/da8xx.h>
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#include <mach/usb.h>
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#define DA830_EVM_PHY_MASK 0x0
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#define DA830_EVM_MDIO_FREQUENCY 2200000 /* PHY bus frequency */
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/*
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* USB1 VBUS is controlled by GPIO1[15], over-current is reported on GPIO2[4].
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*/
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#define ON_BD_USB_DRV GPIO_TO_PIN(1, 15)
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#define ON_BD_USB_OVC GPIO_TO_PIN(2, 4)
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static const short da830_evm_usb11_pins[] = {
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DA830_GPIO1_15, DA830_GPIO2_4,
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-1
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};
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static da8xx_ocic_handler_t da830_evm_usb_ocic_handler;
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static int da830_evm_usb_set_power(unsigned port, int on)
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{
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gpio_set_value(ON_BD_USB_DRV, on);
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return 0;
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}
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static int da830_evm_usb_get_power(unsigned port)
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{
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return gpio_get_value(ON_BD_USB_DRV);
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}
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static int da830_evm_usb_get_oci(unsigned port)
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{
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return !gpio_get_value(ON_BD_USB_OVC);
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}
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static irqreturn_t da830_evm_usb_ocic_irq(int, void *);
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static int da830_evm_usb_ocic_notify(da8xx_ocic_handler_t handler)
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{
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int irq = gpio_to_irq(ON_BD_USB_OVC);
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int error = 0;
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if (handler != NULL) {
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da830_evm_usb_ocic_handler = handler;
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error = request_irq(irq, da830_evm_usb_ocic_irq, IRQF_DISABLED |
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IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
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"OHCI over-current indicator", NULL);
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if (error)
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printk(KERN_ERR "%s: could not request IRQ to watch "
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"over-current indicator changes\n", __func__);
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} else
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free_irq(irq, NULL);
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return error;
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}
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static struct da8xx_ohci_root_hub da830_evm_usb11_pdata = {
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.set_power = da830_evm_usb_set_power,
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.get_power = da830_evm_usb_get_power,
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.get_oci = da830_evm_usb_get_oci,
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.ocic_notify = da830_evm_usb_ocic_notify,
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/* TPS2065 switch @ 5V */
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.potpgt = (3 + 1) / 2, /* 3 ms max */
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};
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static irqreturn_t da830_evm_usb_ocic_irq(int irq, void *dev_id)
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{
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da830_evm_usb_ocic_handler(&da830_evm_usb11_pdata, 1);
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return IRQ_HANDLED;
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}
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static __init void da830_evm_usb_init(void)
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{
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u32 cfgchip2;
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int ret;
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/*
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* Set up USB clock/mode in the CFGCHIP2 register.
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* FYI: CFGCHIP2 is 0x0000ef00 initially.
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*/
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cfgchip2 = __raw_readl(DA8XX_SYSCFG0_VIRT(DA8XX_CFGCHIP2_REG));
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/* USB2.0 PHY reference clock is 24 MHz */
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cfgchip2 &= ~CFGCHIP2_REFFREQ;
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cfgchip2 |= CFGCHIP2_REFFREQ_24MHZ;
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/*
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* Select internal reference clock for USB 2.0 PHY
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* and use it as a clock source for USB 1.1 PHY
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* (this is the default setting anyway).
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*/
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cfgchip2 &= ~CFGCHIP2_USB1PHYCLKMUX;
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cfgchip2 |= CFGCHIP2_USB2PHYCLKMUX;
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/*
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* We have to override VBUS/ID signals when MUSB is configured into the
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* host-only mode -- ID pin will float if no cable is connected, so the
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* controller won't be able to drive VBUS thinking that it's a B-device.
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* Otherwise, we want to use the OTG mode and enable VBUS comparators.
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*/
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cfgchip2 &= ~CFGCHIP2_OTGMODE;
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#ifdef CONFIG_USB_MUSB_HOST
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cfgchip2 |= CFGCHIP2_FORCE_HOST;
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#else
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cfgchip2 |= CFGCHIP2_SESENDEN | CFGCHIP2_VBDTCTEN;
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#endif
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__raw_writel(cfgchip2, DA8XX_SYSCFG0_VIRT(DA8XX_CFGCHIP2_REG));
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/* USB_REFCLKIN is not used. */
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ret = davinci_cfg_reg(DA830_USB0_DRVVBUS);
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if (ret)
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pr_warning("%s: USB 2.0 PinMux setup failed: %d\n",
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__func__, ret);
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else {
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/*
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* TPS2065 switch @ 5V supplies 1 A (sustains 1.5 A),
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* with the power on to power good time of 3 ms.
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*/
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ret = da8xx_register_usb20(1000, 3);
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if (ret)
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pr_warning("%s: USB 2.0 registration failed: %d\n",
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__func__, ret);
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}
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ret = davinci_cfg_reg_list(da830_evm_usb11_pins);
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if (ret) {
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pr_warning("%s: USB 1.1 PinMux setup failed: %d\n",
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__func__, ret);
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return;
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}
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ret = gpio_request(ON_BD_USB_DRV, "ON_BD_USB_DRV");
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if (ret) {
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printk(KERN_ERR "%s: failed to request GPIO for USB 1.1 port "
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"power control: %d\n", __func__, ret);
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return;
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}
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gpio_direction_output(ON_BD_USB_DRV, 0);
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ret = gpio_request(ON_BD_USB_OVC, "ON_BD_USB_OVC");
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if (ret) {
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printk(KERN_ERR "%s: failed to request GPIO for USB 1.1 port "
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"over-current indicator: %d\n", __func__, ret);
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return;
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}
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gpio_direction_input(ON_BD_USB_OVC);
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ret = da8xx_register_usb11(&da830_evm_usb11_pdata);
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if (ret)
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pr_warning("%s: USB 1.1 registration failed: %d\n",
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__func__, ret);
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}
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static struct davinci_uart_config da830_evm_uart_config __initdata = {
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.enabled_uarts = 0x7,
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};
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static const short da830_evm_mcasp1_pins[] = {
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DA830_AHCLKX1, DA830_ACLKX1, DA830_AFSX1, DA830_AHCLKR1, DA830_AFSR1,
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DA830_AMUTE1, DA830_AXR1_0, DA830_AXR1_1, DA830_AXR1_2, DA830_AXR1_5,
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DA830_ACLKR1, DA830_AXR1_6, DA830_AXR1_7, DA830_AXR1_8, DA830_AXR1_10,
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DA830_AXR1_11,
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-1
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};
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static u8 da830_iis_serializer_direction[] = {
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RX_MODE, INACTIVE_MODE, INACTIVE_MODE, INACTIVE_MODE,
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INACTIVE_MODE, TX_MODE, INACTIVE_MODE, INACTIVE_MODE,
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INACTIVE_MODE, INACTIVE_MODE, INACTIVE_MODE, INACTIVE_MODE,
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};
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static struct snd_platform_data da830_evm_snd_data = {
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.tx_dma_offset = 0x2000,
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.rx_dma_offset = 0x2000,
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.op_mode = DAVINCI_MCASP_IIS_MODE,
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.num_serializer = ARRAY_SIZE(da830_iis_serializer_direction),
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.tdm_slots = 2,
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.serial_dir = da830_iis_serializer_direction,
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.asp_chan_q = EVENTQ_0,
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.version = MCASP_VERSION_2,
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.txnumevt = 1,
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.rxnumevt = 1,
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};
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/*
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* GPIO2[1] is used as MMC_SD_WP and GPIO2[2] as MMC_SD_INS.
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*/
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static const short da830_evm_mmc_sd_pins[] = {
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DA830_MMCSD_DAT_0, DA830_MMCSD_DAT_1, DA830_MMCSD_DAT_2,
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DA830_MMCSD_DAT_3, DA830_MMCSD_DAT_4, DA830_MMCSD_DAT_5,
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DA830_MMCSD_DAT_6, DA830_MMCSD_DAT_7, DA830_MMCSD_CLK,
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DA830_MMCSD_CMD, DA830_GPIO2_1, DA830_GPIO2_2,
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-1
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};
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#define DA830_MMCSD_WP_PIN GPIO_TO_PIN(2, 1)
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#define DA830_MMCSD_CD_PIN GPIO_TO_PIN(2, 2)
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static int da830_evm_mmc_get_ro(int index)
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{
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return gpio_get_value(DA830_MMCSD_WP_PIN);
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}
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static int da830_evm_mmc_get_cd(int index)
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{
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return !gpio_get_value(DA830_MMCSD_CD_PIN);
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}
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static struct davinci_mmc_config da830_evm_mmc_config = {
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.get_ro = da830_evm_mmc_get_ro,
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.get_cd = da830_evm_mmc_get_cd,
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.wires = 8,
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.max_freq = 50000000,
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.caps = MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED,
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.version = MMC_CTLR_VERSION_2,
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};
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static inline void da830_evm_init_mmc(void)
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{
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int ret;
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ret = davinci_cfg_reg_list(da830_evm_mmc_sd_pins);
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if (ret) {
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pr_warning("da830_evm_init: mmc/sd mux setup failed: %d\n",
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ret);
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return;
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}
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ret = gpio_request(DA830_MMCSD_WP_PIN, "MMC WP");
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if (ret) {
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pr_warning("da830_evm_init: can not open GPIO %d\n",
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DA830_MMCSD_WP_PIN);
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return;
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}
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gpio_direction_input(DA830_MMCSD_WP_PIN);
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ret = gpio_request(DA830_MMCSD_CD_PIN, "MMC CD\n");
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if (ret) {
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pr_warning("da830_evm_init: can not open GPIO %d\n",
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DA830_MMCSD_CD_PIN);
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return;
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}
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gpio_direction_input(DA830_MMCSD_CD_PIN);
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ret = da8xx_register_mmcsd0(&da830_evm_mmc_config);
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if (ret) {
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pr_warning("da830_evm_init: mmc/sd registration failed: %d\n",
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ret);
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gpio_free(DA830_MMCSD_WP_PIN);
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}
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}
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/*
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* UI board NAND/NOR flashes only use 8-bit data bus.
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*/
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static const short da830_evm_emif25_pins[] = {
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DA830_EMA_D_0, DA830_EMA_D_1, DA830_EMA_D_2, DA830_EMA_D_3,
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DA830_EMA_D_4, DA830_EMA_D_5, DA830_EMA_D_6, DA830_EMA_D_7,
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DA830_EMA_A_0, DA830_EMA_A_1, DA830_EMA_A_2, DA830_EMA_A_3,
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DA830_EMA_A_4, DA830_EMA_A_5, DA830_EMA_A_6, DA830_EMA_A_7,
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DA830_EMA_A_8, DA830_EMA_A_9, DA830_EMA_A_10, DA830_EMA_A_11,
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DA830_EMA_A_12, DA830_EMA_BA_0, DA830_EMA_BA_1, DA830_NEMA_WE,
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DA830_NEMA_CS_2, DA830_NEMA_CS_3, DA830_NEMA_OE, DA830_EMA_WAIT_0,
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-1
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};
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#if defined(CONFIG_MMC_DAVINCI) || defined(CONFIG_MMC_DAVINCI_MODULE)
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#define HAS_MMC 1
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#else
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#define HAS_MMC 0
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#endif
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#ifdef CONFIG_DA830_UI_NAND
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static struct mtd_partition da830_evm_nand_partitions[] = {
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/* bootloader (U-Boot, etc) in first sector */
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[0] = {
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.name = "bootloader",
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.offset = 0,
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.size = SZ_128K,
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.mask_flags = MTD_WRITEABLE, /* force read-only */
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},
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/* bootloader params in the next sector */
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[1] = {
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.name = "params",
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.offset = MTDPART_OFS_APPEND,
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.size = SZ_128K,
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.mask_flags = MTD_WRITEABLE, /* force read-only */
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},
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/* kernel */
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[2] = {
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.name = "kernel",
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.offset = MTDPART_OFS_APPEND,
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.size = SZ_2M,
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.mask_flags = 0,
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},
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/* file system */
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[3] = {
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.name = "filesystem",
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.offset = MTDPART_OFS_APPEND,
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.size = MTDPART_SIZ_FULL,
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.mask_flags = 0,
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}
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};
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/* flash bbt decriptors */
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static uint8_t da830_evm_nand_bbt_pattern[] = { 'B', 'b', 't', '0' };
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static uint8_t da830_evm_nand_mirror_pattern[] = { '1', 't', 'b', 'B' };
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static struct nand_bbt_descr da830_evm_nand_bbt_main_descr = {
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.options = NAND_BBT_LASTBLOCK | NAND_BBT_CREATE |
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NAND_BBT_WRITE | NAND_BBT_2BIT |
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NAND_BBT_VERSION | NAND_BBT_PERCHIP,
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.offs = 2,
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.len = 4,
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.veroffs = 16,
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.maxblocks = 4,
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.pattern = da830_evm_nand_bbt_pattern
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};
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static struct nand_bbt_descr da830_evm_nand_bbt_mirror_descr = {
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.options = NAND_BBT_LASTBLOCK | NAND_BBT_CREATE |
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NAND_BBT_WRITE | NAND_BBT_2BIT |
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NAND_BBT_VERSION | NAND_BBT_PERCHIP,
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.offs = 2,
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.len = 4,
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.veroffs = 16,
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.maxblocks = 4,
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.pattern = da830_evm_nand_mirror_pattern
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};
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static struct davinci_nand_pdata da830_evm_nand_pdata = {
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.parts = da830_evm_nand_partitions,
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.nr_parts = ARRAY_SIZE(da830_evm_nand_partitions),
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.ecc_mode = NAND_ECC_HW,
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.ecc_bits = 4,
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.options = NAND_USE_FLASH_BBT,
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.bbt_td = &da830_evm_nand_bbt_main_descr,
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.bbt_md = &da830_evm_nand_bbt_mirror_descr,
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};
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static struct resource da830_evm_nand_resources[] = {
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[0] = { /* First memory resource is NAND I/O window */
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.start = DA8XX_AEMIF_CS3_BASE,
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.end = DA8XX_AEMIF_CS3_BASE + PAGE_SIZE - 1,
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.flags = IORESOURCE_MEM,
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},
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[1] = { /* Second memory resource is AEMIF control registers */
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.start = DA8XX_AEMIF_CTL_BASE,
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.end = DA8XX_AEMIF_CTL_BASE + SZ_32K - 1,
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.flags = IORESOURCE_MEM,
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},
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};
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static struct platform_device da830_evm_nand_device = {
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.name = "davinci_nand",
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.id = 1,
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.dev = {
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.platform_data = &da830_evm_nand_pdata,
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},
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.num_resources = ARRAY_SIZE(da830_evm_nand_resources),
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.resource = da830_evm_nand_resources,
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};
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static inline void da830_evm_init_nand(int mux_mode)
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{
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int ret;
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if (HAS_MMC) {
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pr_warning("WARNING: both MMC/SD and NAND are "
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"enabled, but they share AEMIF pins.\n"
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"\tDisable MMC/SD for NAND support.\n");
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return;
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}
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ret = davinci_cfg_reg_list(da830_evm_emif25_pins);
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if (ret)
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pr_warning("da830_evm_init: emif25 mux setup failed: %d\n",
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ret);
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ret = platform_device_register(&da830_evm_nand_device);
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if (ret)
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pr_warning("da830_evm_init: NAND device not registered.\n");
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gpio_direction_output(mux_mode, 1);
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}
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#else
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static inline void da830_evm_init_nand(int mux_mode) { }
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#endif
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#ifdef CONFIG_DA830_UI_LCD
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static inline void da830_evm_init_lcdc(int mux_mode)
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{
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int ret;
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ret = davinci_cfg_reg_list(da830_lcdcntl_pins);
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if (ret)
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pr_warning("da830_evm_init: lcdcntl mux setup failed: %d\n",
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ret);
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ret = da8xx_register_lcdc(&sharp_lcd035q3dg01_pdata);
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if (ret)
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pr_warning("da830_evm_init: lcd setup failed: %d\n", ret);
|
|
|
|
gpio_direction_output(mux_mode, 0);
|
|
}
|
|
#else
|
|
static inline void da830_evm_init_lcdc(int mux_mode) { }
|
|
#endif
|
|
|
|
static struct at24_platform_data da830_evm_i2c_eeprom_info = {
|
|
.byte_len = SZ_256K / 8,
|
|
.page_size = 64,
|
|
.flags = AT24_FLAG_ADDR16,
|
|
.setup = davinci_get_mac_addr,
|
|
.context = (void *)0x7f00,
|
|
};
|
|
|
|
static int __init da830_evm_ui_expander_setup(struct i2c_client *client,
|
|
int gpio, unsigned ngpio, void *context)
|
|
{
|
|
gpio_request(gpio + 6, "UI MUX_MODE");
|
|
|
|
/* Drive mux mode low to match the default without UI card */
|
|
gpio_direction_output(gpio + 6, 0);
|
|
|
|
da830_evm_init_lcdc(gpio + 6);
|
|
|
|
da830_evm_init_nand(gpio + 6);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int da830_evm_ui_expander_teardown(struct i2c_client *client, int gpio,
|
|
unsigned ngpio, void *context)
|
|
{
|
|
gpio_free(gpio + 6);
|
|
return 0;
|
|
}
|
|
|
|
static struct pcf857x_platform_data __initdata da830_evm_ui_expander_info = {
|
|
.gpio_base = DAVINCI_N_GPIO,
|
|
.setup = da830_evm_ui_expander_setup,
|
|
.teardown = da830_evm_ui_expander_teardown,
|
|
};
|
|
|
|
static struct i2c_board_info __initdata da830_evm_i2c_devices[] = {
|
|
{
|
|
I2C_BOARD_INFO("24c256", 0x50),
|
|
.platform_data = &da830_evm_i2c_eeprom_info,
|
|
},
|
|
{
|
|
I2C_BOARD_INFO("tlv320aic3x", 0x18),
|
|
},
|
|
{
|
|
I2C_BOARD_INFO("pcf8574", 0x3f),
|
|
.platform_data = &da830_evm_ui_expander_info,
|
|
},
|
|
};
|
|
|
|
static struct davinci_i2c_platform_data da830_evm_i2c_0_pdata = {
|
|
.bus_freq = 100, /* kHz */
|
|
.bus_delay = 0, /* usec */
|
|
};
|
|
|
|
/*
|
|
* The following EDMA channels/slots are not being used by drivers (for
|
|
* example: Timer, GPIO, UART events etc) on da830/omap-l137 EVM, hence
|
|
* they are being reserved for codecs on the DSP side.
|
|
*/
|
|
static const s16 da830_dma_rsv_chans[][2] = {
|
|
/* (offset, number) */
|
|
{ 8, 2},
|
|
{12, 2},
|
|
{24, 4},
|
|
{30, 2},
|
|
{-1, -1}
|
|
};
|
|
|
|
static const s16 da830_dma_rsv_slots[][2] = {
|
|
/* (offset, number) */
|
|
{ 8, 2},
|
|
{12, 2},
|
|
{24, 4},
|
|
{30, 26},
|
|
{-1, -1}
|
|
};
|
|
|
|
static struct edma_rsv_info da830_edma_rsv[] = {
|
|
{
|
|
.rsv_chans = da830_dma_rsv_chans,
|
|
.rsv_slots = da830_dma_rsv_slots,
|
|
},
|
|
};
|
|
|
|
static __init void da830_evm_init(void)
|
|
{
|
|
struct davinci_soc_info *soc_info = &davinci_soc_info;
|
|
int ret;
|
|
|
|
ret = da830_register_edma(da830_edma_rsv);
|
|
if (ret)
|
|
pr_warning("da830_evm_init: edma registration failed: %d\n",
|
|
ret);
|
|
|
|
ret = davinci_cfg_reg_list(da830_i2c0_pins);
|
|
if (ret)
|
|
pr_warning("da830_evm_init: i2c0 mux setup failed: %d\n",
|
|
ret);
|
|
|
|
ret = da8xx_register_i2c(0, &da830_evm_i2c_0_pdata);
|
|
if (ret)
|
|
pr_warning("da830_evm_init: i2c0 registration failed: %d\n",
|
|
ret);
|
|
|
|
da830_evm_usb_init();
|
|
|
|
soc_info->emac_pdata->phy_mask = DA830_EVM_PHY_MASK;
|
|
soc_info->emac_pdata->mdio_max_freq = DA830_EVM_MDIO_FREQUENCY;
|
|
soc_info->emac_pdata->rmii_en = 1;
|
|
|
|
ret = davinci_cfg_reg_list(da830_cpgmac_pins);
|
|
if (ret)
|
|
pr_warning("da830_evm_init: cpgmac mux setup failed: %d\n",
|
|
ret);
|
|
|
|
ret = da8xx_register_emac();
|
|
if (ret)
|
|
pr_warning("da830_evm_init: emac registration failed: %d\n",
|
|
ret);
|
|
|
|
ret = da8xx_register_watchdog();
|
|
if (ret)
|
|
pr_warning("da830_evm_init: watchdog registration failed: %d\n",
|
|
ret);
|
|
|
|
davinci_serial_init(&da830_evm_uart_config);
|
|
i2c_register_board_info(1, da830_evm_i2c_devices,
|
|
ARRAY_SIZE(da830_evm_i2c_devices));
|
|
|
|
ret = davinci_cfg_reg_list(da830_evm_mcasp1_pins);
|
|
if (ret)
|
|
pr_warning("da830_evm_init: mcasp1 mux setup failed: %d\n",
|
|
ret);
|
|
|
|
da8xx_register_mcasp(1, &da830_evm_snd_data);
|
|
|
|
da830_evm_init_mmc();
|
|
|
|
ret = da8xx_register_rtc();
|
|
if (ret)
|
|
pr_warning("da830_evm_init: rtc setup failed: %d\n", ret);
|
|
}
|
|
|
|
#ifdef CONFIG_SERIAL_8250_CONSOLE
|
|
static int __init da830_evm_console_init(void)
|
|
{
|
|
return add_preferred_console("ttyS", 2, "115200");
|
|
}
|
|
console_initcall(da830_evm_console_init);
|
|
#endif
|
|
|
|
static void __init da830_evm_map_io(void)
|
|
{
|
|
da830_init();
|
|
}
|
|
|
|
MACHINE_START(DAVINCI_DA830_EVM, "DaVinci DA830/OMAP-L137/AM17x EVM")
|
|
.phys_io = IO_PHYS,
|
|
.io_pg_offst = (__IO_ADDRESS(IO_PHYS) >> 18) & 0xfffc,
|
|
.boot_params = (DA8XX_DDR_BASE + 0x100),
|
|
.map_io = da830_evm_map_io,
|
|
.init_irq = cp_intc_init,
|
|
.timer = &davinci_timer,
|
|
.init_machine = da830_evm_init,
|
|
MACHINE_END
|