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Commit 14b03204 authored by Michael Hennerich's avatar Michael Hennerich Committed by Bryan Wu
Browse files

[Blackfin] arch: Functional power management support: Add CPU and platform voltage scaling support 



Signed-off-by: default avatarMichael Hennerich <michael.hennerich@analog.com>
Signed-off-by: default avatarBryan Wu <cooloney@kernel.org>
parent 19d6d7d5

arch/blackfin/Kconfig

+11 −0
Original line number Diff line number Diff line
@@ -967,6 +967,17 @@ menu "CPU Frequency scaling" 


source "drivers/cpufreq/Kconfig"



config CPU_VOLTAGE

	bool "CPU Voltage scaling"

	depends on EXPERIMENTAL	

	depends on CPU_FREQ

	default n

	help

	  Say Y here if you want CPU voltage scaling according to the CPU frequency.

	  This option violates the PLL BYPASS recommendation in the Blackfin Processor

	  manuals. There is a theoretical risk that during VDDINT transitions 

	  the PLL may unlock.



endmenu



source "net/Kconfig"

arch/blackfin/mach-bf527/boards/ezkit.c

+26 −0
Original line number Diff line number Diff line
@@ -50,6 +50,7 @@ 
#include <asm/reboot.h>

#include <asm/nand.h>

#include <asm/portmux.h>

#include <asm/dpmc.h>

#include <linux/spi/ad7877.h>



/*
@@ -839,7 +840,32 @@ static struct platform_device bfin_gpios_device = { 
	.resource = &bfin_gpios_resources,

};



static const unsigned int cclk_vlev_datasheet[] =

{

	VRPAIR(VLEV_100, 400000000),

	VRPAIR(VLEV_105, 426000000),

	VRPAIR(VLEV_110, 500000000),

	VRPAIR(VLEV_115, 533000000),

	VRPAIR(VLEV_120, 600000000),

};



static struct bfin_dpmc_platform_data bfin_dmpc_vreg_data = {

	.tuple_tab = cclk_vlev_datasheet,

	.tabsize = ARRAY_SIZE(cclk_vlev_datasheet),

	.vr_settling_time = 25 /* us */,

};



static struct platform_device bfin_dpmc = {

	.name = "bfin dpmc",

	.dev = {

		.platform_data = &bfin_dmpc_vreg_data,

	},

};



static struct platform_device *stamp_devices[] __initdata = {



	&bfin_dpmc,



#if defined(CONFIG_MTD_NAND_BF5XX) || defined(CONFIG_MTD_NAND_BF5XX_MODULE)

	&bf5xx_nand_device,

#endif

arch/blackfin/mach-bf533/boards/cm_bf533.c

+31 −0
Original line number Diff line number Diff line
@@ -39,6 +39,7 @@ 
#include <asm/dma.h>

#include <asm/bfin5xx_spi.h>

#include <asm/portmux.h>

#include <asm/dpmc.h>



/*

 * Name the Board for the /proc/cpuinfo
@@ -341,7 +342,37 @@ static struct platform_device bfin_pata_device = { 
};

#endif



static const unsigned int cclk_vlev_datasheet[] =

{

	VRPAIR(VLEV_085, 250000000),

	VRPAIR(VLEV_090, 376000000),

	VRPAIR(VLEV_095, 426000000),

	VRPAIR(VLEV_100, 426000000),

	VRPAIR(VLEV_105, 476000000),

	VRPAIR(VLEV_110, 476000000),

	VRPAIR(VLEV_115, 476000000),

	VRPAIR(VLEV_120, 600000000),

	VRPAIR(VLEV_125, 600000000),

	VRPAIR(VLEV_130, 600000000),

};



static struct bfin_dpmc_platform_data bfin_dmpc_vreg_data = {

	.tuple_tab = cclk_vlev_datasheet,

	.tabsize = ARRAY_SIZE(cclk_vlev_datasheet),

	.vr_settling_time = 25 /* us */,

};



static struct platform_device bfin_dpmc = {

	.name = "bfin dpmc",

	.dev = {

		.platform_data = &bfin_dmpc_vreg_data,

	},

};



static struct platform_device *cm_bf533_devices[] __initdata = {



	&bfin_dpmc,



#if defined(CONFIG_SERIAL_BFIN) || defined(CONFIG_SERIAL_BFIN_MODULE)

	&bfin_uart_device,

#endif

arch/blackfin/mach-bf533/boards/ezkit.c

+31 −0
Original line number Diff line number Diff line
@@ -42,6 +42,7 @@ 
#include <asm/dma.h>

#include <asm/bfin5xx_spi.h>

#include <asm/portmux.h>

#include <asm/dpmc.h>



/*

 * Name the Board for the /proc/cpuinfo
@@ -350,7 +351,37 @@ static struct platform_device i2c_gpio_device = { 
};

#endif



static const unsigned int cclk_vlev_datasheet[] =

{

	VRPAIR(VLEV_085, 250000000),

	VRPAIR(VLEV_090, 376000000),

	VRPAIR(VLEV_095, 426000000),

	VRPAIR(VLEV_100, 426000000),

	VRPAIR(VLEV_105, 476000000),

	VRPAIR(VLEV_110, 476000000),

	VRPAIR(VLEV_115, 476000000),

	VRPAIR(VLEV_120, 600000000),

	VRPAIR(VLEV_125, 600000000),

	VRPAIR(VLEV_130, 600000000),

};



static struct bfin_dpmc_platform_data bfin_dmpc_vreg_data = {

	.tuple_tab = cclk_vlev_datasheet,

	.tabsize = ARRAY_SIZE(cclk_vlev_datasheet),

	.vr_settling_time = 25 /* us */,

};



static struct platform_device bfin_dpmc = {

	.name = "bfin dpmc",

	.dev = {

		.platform_data = &bfin_dmpc_vreg_data,

	},

};



static struct platform_device *ezkit_devices[] __initdata = {



	&bfin_dpmc,



#if defined(CONFIG_SMC91X) || defined(CONFIG_SMC91X_MODULE)

	&smc91x_device,

#endif

arch/blackfin/mach-bf533/boards/stamp.c

+31 −0
Original line number Diff line number Diff line
@@ -45,6 +45,7 @@ 
#include <asm/bfin5xx_spi.h>

#include <asm/reboot.h>

#include <asm/portmux.h>

#include <asm/dpmc.h>



/*

 * Name the Board for the /proc/cpuinfo
@@ -516,7 +517,37 @@ static struct i2c_board_info __initdata bfin_i2c_board_info[] = { 
};

#endif



static const unsigned int cclk_vlev_datasheet[] =

{

	VRPAIR(VLEV_085, 250000000),

	VRPAIR(VLEV_090, 376000000),

	VRPAIR(VLEV_095, 426000000),

	VRPAIR(VLEV_100, 426000000),

	VRPAIR(VLEV_105, 476000000),

	VRPAIR(VLEV_110, 476000000),

	VRPAIR(VLEV_115, 476000000),

	VRPAIR(VLEV_120, 600000000),

	VRPAIR(VLEV_125, 600000000),

	VRPAIR(VLEV_130, 600000000),

};



static struct bfin_dpmc_platform_data bfin_dmpc_vreg_data = {

	.tuple_tab = cclk_vlev_datasheet,

	.tabsize = ARRAY_SIZE(cclk_vlev_datasheet),

	.vr_settling_time = 25 /* us */,

};



static struct platform_device bfin_dpmc = {

	.name = "bfin dpmc",

	.dev = {

		.platform_data = &bfin_dmpc_vreg_data,

	},

};



static struct platform_device *stamp_devices[] __initdata = {



	&bfin_dpmc,



#if defined(CONFIG_RTC_DRV_BFIN) || defined(CONFIG_RTC_DRV_BFIN_MODULE)

	&rtc_device,

#endif