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clk: davinci: Add platform information for TI DM646x PSC 

This adds platform-specific declarations for the PSC clocks on TI
DM646x based systems.

Signed-off-by: David Lechner <david@lechnology.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
hifive-unleashed-5.1
David Lechner 2018-03-15 21:52:32 -05:00 committed by Stephen Boyd
parent f41e527575
commit aad739f946
4 changed files with 83 additions and 0 deletions
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1
drivers/clk/davinci/Makefile
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@ -15,4 +15,5 @@ obj-$(CONFIG_ARCH_DAVINCI_DA850) += psc-da850.o
obj-$(CONFIG_ARCH_DAVINCI_DM355) += psc-dm355.o
obj-$(CONFIG_ARCH_DAVINCI_DM365) += psc-dm365.o
obj-$(CONFIG_ARCH_DAVINCI_DM644x) += psc-dm644x.o
obj-$(CONFIG_ARCH_DAVINCI_DM646x) += psc-dm646x.o
endif

80
drivers/clk/davinci/psc-dm646x.c 100644
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@ -0,0 +1,80 @@
// SPDX-License-Identifier: GPL-2.0
/*
* PSC clock descriptions for TI DaVinci DM646x
*
* Copyright (C) 2018 David Lechner <david@lechnology.com>
*/
#include <linux/clk-provider.h>
#include <linux/clk.h>
#include <linux/clkdev.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include "psc.h"
LPSC_CLKDEV1(ide_clkdev, NULL, "palm_bk3710");
LPSC_CLKDEV2(emac_clkdev, NULL, "davinci_emac.1",
"fck", "davinci_mdio.0");
LPSC_CLKDEV1(aemif_clkdev, "aemif", NULL);
LPSC_CLKDEV1(mcasp0_clkdev, NULL, "davinci-mcasp.0");
LPSC_CLKDEV1(mcasp1_clkdev, NULL, "davinci-mcasp.1");
LPSC_CLKDEV1(uart0_clkdev, NULL, "serial8250.0");
LPSC_CLKDEV1(uart1_clkdev, NULL, "serial8250.1");
LPSC_CLKDEV1(uart2_clkdev, NULL, "serial8250.2");
LPSC_CLKDEV1(i2c_clkdev, NULL, "i2c_davinci.1");
/* REVISIT: gpio-davinci.c should be modified to drop con_id */
LPSC_CLKDEV1(gpio_clkdev, "gpio", NULL);
LPSC_CLKDEV1(timer0_clkdev, "timer0", NULL);
static const struct davinci_lpsc_clk_info dm646x_psc_info[] = {
LPSC(0, 0, arm, pll1_sysclk2, NULL, LPSC_ALWAYS_ENABLED),
/* REVISIT how to disable? */
LPSC(1, 0, dsp, pll1_sysclk1, NULL, LPSC_ALWAYS_ENABLED),
LPSC(4, 0, edma_cc, pll1_sysclk2, NULL, LPSC_ALWAYS_ENABLED),
LPSC(5, 0, edma_tc0, pll1_sysclk2, NULL, LPSC_ALWAYS_ENABLED),
LPSC(6, 0, edma_tc1, pll1_sysclk2, NULL, LPSC_ALWAYS_ENABLED),
LPSC(7, 0, edma_tc2, pll1_sysclk2, NULL, LPSC_ALWAYS_ENABLED),
LPSC(8, 0, edma_tc3, pll1_sysclk2, NULL, LPSC_ALWAYS_ENABLED),
LPSC(10, 0, ide, pll1_sysclk4, ide_clkdev, 0),
LPSC(14, 0, emac, pll1_sysclk3, emac_clkdev, 0),
LPSC(16, 0, vpif0, ref_clk, NULL, LPSC_ALWAYS_ENABLED),
LPSC(17, 0, vpif1, ref_clk, NULL, LPSC_ALWAYS_ENABLED),
LPSC(21, 0, aemif, pll1_sysclk3, aemif_clkdev, LPSC_ALWAYS_ENABLED),
LPSC(22, 0, mcasp0, pll1_sysclk3, mcasp0_clkdev, 0),
LPSC(23, 0, mcasp1, pll1_sysclk3, mcasp1_clkdev, 0),
LPSC(26, 0, uart0, aux_clkin, uart0_clkdev, 0),
LPSC(27, 0, uart1, aux_clkin, uart1_clkdev, 0),
LPSC(28, 0, uart2, aux_clkin, uart2_clkdev, 0),
/* REVIST: disabling hangs system */
LPSC(29, 0, pwm0, pll1_sysclk3, NULL, LPSC_ALWAYS_ENABLED),
/* REVIST: disabling hangs system */
LPSC(30, 0, pwm1, pll1_sysclk3, NULL, LPSC_ALWAYS_ENABLED),
LPSC(31, 0, i2c, pll1_sysclk3, i2c_clkdev, 0),
LPSC(33, 0, gpio, pll1_sysclk3, gpio_clkdev, 0),
LPSC(34, 0, timer0, pll1_sysclk3, timer0_clkdev, LPSC_ALWAYS_ENABLED),
LPSC(35, 0, timer1, pll1_sysclk3, NULL, 0),
{ }
};
static int dm646x_psc_init(struct device *dev, void __iomem *base)
{
return davinci_psc_register_clocks(dev, dm646x_psc_info, 46, base);
}
static struct clk_bulk_data dm646x_psc_parent_clks[] = {
{ .id = "ref_clk" },
{ .id = "aux_clkin" },
{ .id = "pll1_sysclk1" },
{ .id = "pll1_sysclk2" },
{ .id = "pll1_sysclk3" },
{ .id = "pll1_sysclk4" },
{ .id = "pll1_sysclk5" },
};
const struct davinci_psc_init_data dm646x_psc_init_data = {
.parent_clks = dm646x_psc_parent_clks,
.num_parent_clks = ARRAY_SIZE(dm646x_psc_parent_clks),
.psc_init = &dm646x_psc_init,
};

1
drivers/clk/davinci/psc.c
View File

@ -495,6 +495,7 @@ static const struct platform_device_id davinci_psc_id_table[] = {
{ .name = "dm355-psc", .driver_data = (kernel_ulong_t)&dm355_psc_init_data },
{ .name = "dm365-psc", .driver_data = (kernel_ulong_t)&dm365_psc_init_data },
{ .name = "dm644x-psc", .driver_data = (kernel_ulong_t)&dm644x_psc_init_data },
{ .name = "dm646x-psc", .driver_data = (kernel_ulong_t)&dm646x_psc_init_data },
{ }
};

1
drivers/clk/davinci/psc.h
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@ -103,5 +103,6 @@ extern const struct davinci_psc_init_data of_da850_psc1_init_data;
extern const struct davinci_psc_init_data dm355_psc_init_data;
extern const struct davinci_psc_init_data dm365_psc_init_data;
extern const struct davinci_psc_init_data dm644x_psc_init_data;
extern const struct davinci_psc_init_data dm646x_psc_init_data;
#endif /* __CLK_DAVINCI_PSC_H__ */