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alistair23-linux/arch/arm/boot/dts/imx28-evk.dts
Fabio Estevam d1e61eb443 ARM: dts: imx28-evk: Let i2c0 run at 100kHz 
Commit 78b81f4666 ("ARM: dts: imx28-evk: Run I2C0 at 400kHz") caused issues
when doing the following sequence in loop:

- Boot the kernel
- Perform audio playback
- Reboot the system via 'reboot' command

In many times the audio card cannot be probed, which causes playback to fail.

After restoring to the original i2c0 frequency of 100kHz there is no such
problem anymore.

This reverts commit 78b81f4666.

Cc: <stable@vger.kernel.org> # 3.16+
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
2014-10-25 20:17:36 +08:00

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/*
* Copyright 2012 Freescale Semiconductor, Inc.
*
* The code contained herein is licensed under the GNU General Public
* License. You may obtain a copy of the GNU General Public License
* Version 2 or later at the following locations:
*
* http://www.opensource.org/licenses/gpl-license.html
* http://www.gnu.org/copyleft/gpl.html
*/
/dts-v1/;
#include "imx28.dtsi"
/ {
model = "Freescale i.MX28 Evaluation Kit";
compatible = "fsl,imx28-evk", "fsl,imx28";
memory {
reg = <0x40000000 0x08000000>;
};
apb@80000000 {
apbh@80000000 {
gpmi-nand@8000c000 {
pinctrl-names = "default";
pinctrl-0 = <&gpmi_pins_a &gpmi_status_cfg
&gpmi_pins_evk>;
status = "okay";
};
ssp0: ssp@80010000 {
compatible = "fsl,imx28-mmc";
pinctrl-names = "default";
pinctrl-0 = <&mmc0_8bit_pins_a
&mmc0_cd_cfg &mmc0_sck_cfg>;
bus-width = <8>;
wp-gpios = <&gpio2 12 0>;
vmmc-supply = <&reg_vddio_sd0>;
status = "okay";
};
ssp1: ssp@80012000 {
compatible = "fsl,imx28-mmc";
bus-width = <8>;
wp-gpios = <&gpio0 28 0>;
};
ssp2: ssp@80014000 {
#address-cells = <1>;
#size-cells = <0>;
compatible = "fsl,imx28-spi";
pinctrl-names = "default";
pinctrl-0 = <&spi2_pins_a>;
status = "okay";
flash: m25p80@0 {
#address-cells = <1>;
#size-cells = <1>;
compatible = "sst,sst25vf016b";
spi-max-frequency = <40000000>;
reg = <0>;
};
};
pinctrl@80018000 {
pinctrl-names = "default";
pinctrl-0 = <&hog_pins_a>;
hog_pins_a: hog@0 {
reg = <0>;
fsl,pinmux-ids = <
MX28_PAD_SSP1_CMD__GPIO_2_13
MX28_PAD_SSP1_DATA3__GPIO_2_15
MX28_PAD_ENET0_RX_CLK__GPIO_4_13
MX28_PAD_SSP1_SCK__GPIO_2_12
MX28_PAD_PWM3__GPIO_3_28
MX28_PAD_LCD_RESET__GPIO_3_30
MX28_PAD_AUART2_RX__GPIO_3_8
MX28_PAD_AUART2_TX__GPIO_3_9
>;
fsl,drive-strength = <MXS_DRIVE_4mA>;
fsl,voltage = <MXS_VOLTAGE_HIGH>;
fsl,pull-up = <MXS_PULL_DISABLE>;
};
led_pin_gpio3_5: led_gpio3_5@0 {
reg = <0>;
fsl,pinmux-ids = <
MX28_PAD_AUART1_TX__GPIO_3_5
>;
fsl,drive-strength = <MXS_DRIVE_4mA>;
fsl,voltage = <MXS_VOLTAGE_HIGH>;
fsl,pull-up = <MXS_PULL_DISABLE>;
};
gpmi_pins_evk: gpmi-nand-evk@0 {
reg = <0>;
fsl,pinmux-ids = <
MX28_PAD_GPMI_CE1N__GPMI_CE1N
MX28_PAD_GPMI_RDY1__GPMI_READY1
>;
fsl,drive-strength = <MXS_DRIVE_4mA>;
fsl,voltage = <MXS_VOLTAGE_HIGH>;
fsl,pull-up = <MXS_PULL_DISABLE>;
};
lcdif_pins_evk: lcdif-evk@0 {
reg = <0>;
fsl,pinmux-ids = <
MX28_PAD_LCD_RD_E__LCD_VSYNC
MX28_PAD_LCD_WR_RWN__LCD_HSYNC
MX28_PAD_LCD_RS__LCD_DOTCLK
MX28_PAD_LCD_CS__LCD_ENABLE
>;
fsl,drive-strength = <MXS_DRIVE_4mA>;
fsl,voltage = <MXS_VOLTAGE_HIGH>;
fsl,pull-up = <MXS_PULL_DISABLE>;
};
};
lcdif@80030000 {
pinctrl-names = "default";
pinctrl-0 = <&lcdif_24bit_pins_a
&lcdif_pins_evk>;
lcd-supply = <&reg_lcd_3v3>;
display = <&display0>;
status = "okay";
display0: display0 {
bits-per-pixel = <32>;
bus-width = <24>;
display-timings {
native-mode = <&timing0>;
timing0: timing0 {
clock-frequency = <33500000>;
hactive = <800>;
vactive = <480>;
hback-porch = <89>;
hfront-porch = <164>;
vback-porch = <23>;
vfront-porch = <10>;
hsync-len = <10>;
vsync-len = <10>;
hsync-active = <0>;
vsync-active = <0>;
de-active = <1>;
pixelclk-active = <0>;
};
};
};
};
can0: can@80032000 {
pinctrl-names = "default";
pinctrl-0 = <&can0_pins_a>;
xceiver-supply = <&reg_can_3v3>;
status = "okay";
};
can1: can@80034000 {
pinctrl-names = "default";
pinctrl-0 = <&can1_pins_a>;
xceiver-supply = <&reg_can_3v3>;
status = "okay";
};
};
apbx@80040000 {
saif0: saif@80042000 {
pinctrl-names = "default";
pinctrl-0 = <&saif0_pins_a>;
status = "okay";
};
saif1: saif@80046000 {
pinctrl-names = "default";
pinctrl-0 = <&saif1_pins_a>;
fsl,saif-master = <&saif0>;
status = "okay";
};
lradc@80050000 {
fsl,lradc-touchscreen-wires = <4>;
status = "okay";
fsl,lradc-touchscreen-wires = <4>;
fsl,ave-ctrl = <4>;
fsl,ave-delay = <2>;
fsl,settling = <10>;
};
i2c0: i2c@80058000 {
pinctrl-names = "default";
pinctrl-0 = <&i2c0_pins_a>;
status = "okay";
sgtl5000: codec@0a {
compatible = "fsl,sgtl5000";
reg = <0x0a>;
VDDA-supply = <&reg_3p3v>;
VDDIO-supply = <&reg_3p3v>;
clocks = <&saif0>;
};
at24@51 {
compatible = "at24,24c32";
pagesize = <32>;
reg = <0x51>;
};
};
pwm: pwm@80064000 {
pinctrl-names = "default";
pinctrl-0 = <&pwm2_pins_a>;
status = "okay";
};
duart: serial@80074000 {
pinctrl-names = "default";
pinctrl-0 = <&duart_pins_a>;
status = "okay";
};
auart0: serial@8006a000 {
pinctrl-names = "default";
pinctrl-0 = <&auart0_pins_a>;
fsl,uart-has-rtscts;
status = "okay";
};
auart3: serial@80070000 {
pinctrl-names = "default";
pinctrl-0 = <&auart3_pins_a>;
status = "okay";
};
usbphy0: usbphy@8007c000 {
status = "okay";
};
usbphy1: usbphy@8007e000 {
status = "okay";
};
};
};
ahb@80080000 {
usb0: usb@80080000 {
pinctrl-names = "default";
pinctrl-0 = <&usb0_id_pins_a>;
vbus-supply = <&reg_usb0_vbus>;
status = "okay";
};
usb1: usb@80090000 {
vbus-supply = <&reg_usb1_vbus>;
status = "okay";
};
mac0: ethernet@800f0000 {
phy-mode = "rmii";
pinctrl-names = "default";
pinctrl-0 = <&mac0_pins_a>;
phy-supply = <&reg_fec_3v3>;
phy-reset-gpios = <&gpio4 13 0>;
phy-reset-duration = <100>;
status = "okay";
};
mac1: ethernet@800f4000 {
phy-mode = "rmii";
pinctrl-names = "default";
pinctrl-0 = <&mac1_pins_a>;
status = "okay";
};
};
regulators {
compatible = "simple-bus";
#address-cells = <1>;
#size-cells = <0>;
reg_3p3v: regulator@0 {
compatible = "regulator-fixed";
reg = <0>;
regulator-name = "3P3V";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
regulator-always-on;
};
reg_vddio_sd0: regulator@1 {
compatible = "regulator-fixed";
reg = <1>;
regulator-name = "vddio-sd0";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
gpio = <&gpio3 28 0>;
};
reg_fec_3v3: regulator@2 {
compatible = "regulator-fixed";
reg = <2>;
regulator-name = "fec-3v3";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
gpio = <&gpio2 15 0>;
};
reg_usb0_vbus: regulator@3 {
compatible = "regulator-fixed";
reg = <3>;
regulator-name = "usb0_vbus";
regulator-min-microvolt = <5000000>;
regulator-max-microvolt = <5000000>;
gpio = <&gpio3 9 0>;
enable-active-high;
};
reg_usb1_vbus: regulator@4 {
compatible = "regulator-fixed";
reg = <4>;
regulator-name = "usb1_vbus";
regulator-min-microvolt = <5000000>;
regulator-max-microvolt = <5000000>;
gpio = <&gpio3 8 0>;
enable-active-high;
};
reg_lcd_3v3: regulator@5 {
compatible = "regulator-fixed";
reg = <5>;
regulator-name = "lcd-3v3";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
gpio = <&gpio3 30 0>;
enable-active-high;
};
reg_can_3v3: regulator@6 {
compatible = "regulator-fixed";
reg = <6>;
regulator-name = "can-3v3";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
gpio = <&gpio2 13 0>;
enable-active-high;
};
};
sound {
compatible = "fsl,imx28-evk-sgtl5000",
"fsl,mxs-audio-sgtl5000";
model = "imx28-evk-sgtl5000";
saif-controllers = <&saif0 &saif1>;
audio-codec = <&sgtl5000>;
};
leds {
compatible = "gpio-leds";
pinctrl-names = "default";
pinctrl-0 = <&led_pin_gpio3_5>;
user {
label = "Heartbeat";
gpios = <&gpio3 5 0>;
linux,default-trigger = "heartbeat";
};
};
backlight {
compatible = "pwm-backlight";
pwms = <&pwm 2 5000000>;
brightness-levels = <0 4 8 16 32 64 128 255>;
default-brightness-level = <6>;
};
};
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