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[Blackfin] arch: Functional power management support: Add CPU and pla…
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…tform voltage scaling support

Signed-off-by: Michael Hennerich <michael.hennerich@analog.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
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Michael Hennerich authored and Bryan Wu committed May 7, 2008
1 parent 19d6d7d commit 14b0320
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Showing 15 changed files with 468 additions and 28 deletions.
11 changes: 11 additions & 0 deletions arch/blackfin/Kconfig
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Expand Up @@ -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"
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26 changes: 26 additions & 0 deletions arch/blackfin/mach-bf527/boards/ezkit.c
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Expand Up @@ -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>

/*
Expand Down Expand Up @@ -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
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31 changes: 31 additions & 0 deletions arch/blackfin/mach-bf533/boards/cm_bf533.c
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Expand Up @@ -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
Expand Down Expand Up @@ -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
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31 changes: 31 additions & 0 deletions arch/blackfin/mach-bf533/boards/ezkit.c
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Expand Up @@ -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
Expand Down Expand Up @@ -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
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31 changes: 31 additions & 0 deletions arch/blackfin/mach-bf533/boards/stamp.c
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Expand Up @@ -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
Expand Down Expand Up @@ -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
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31 changes: 31 additions & 0 deletions arch/blackfin/mach-bf537/boards/cm_bf537.c
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Expand Up @@ -41,6 +41,7 @@
#include <asm/dma.h>
#include <asm/bfin5xx_spi.h>
#include <asm/portmux.h>
#include <asm/dpmc.h>

/*
* Name the Board for the /proc/cpuinfo
Expand Down Expand Up @@ -428,7 +429,37 @@ 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, 500000000),
VRPAIR(VLEV_125, 533000000),
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_bf537_devices[] __initdata = {

&bfin_dpmc,

#if defined(CONFIG_FB_HITACHI_TX09) || defined(CONFIG_FB_HITACHI_TX09_MODULE)
&hitachi_fb_device,
#endif
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31 changes: 31 additions & 0 deletions arch/blackfin/mach-bf537/boards/stamp.c
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Expand Up @@ -47,6 +47,7 @@
#include <asm/bfin5xx_spi.h>
#include <asm/reboot.h>
#include <asm/portmux.h>
#include <asm/dpmc.h>
#include <linux/spi/ad7877.h>

/*
Expand Down Expand Up @@ -817,7 +818,37 @@ 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, 500000000),
VRPAIR(VLEV_125, 533000000),
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_BFIN_CFPCMCIA) || defined(CONFIG_BFIN_CFPCMCIA_MODULE)
&bfin_pcmcia_cf_device,
#endif
Expand Down
32 changes: 32 additions & 0 deletions arch/blackfin/mach-bf548/boards/cm_bf548.c
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Expand Up @@ -44,6 +44,7 @@
#include <asm/nand.h>
#include <asm/portmux.h>
#include <asm/mach/bf54x_keys.h>
#include <asm/dpmc.h>
#include <linux/input.h>
#include <linux/spi/ad7877.h>

Expand Down Expand Up @@ -590,7 +591,38 @@ static struct platform_device bfin_device_gpiokeys = {
};
#endif

static const unsigned int cclk_vlev_datasheet[] =
{
/*
* Internal VLEV BF54XSBBC1533
****temporarily using these values until data sheet is updated
*/
VRPAIR(VLEV_085, 150000000),
VRPAIR(VLEV_090, 250000000),
VRPAIR(VLEV_110, 276000000),
VRPAIR(VLEV_115, 301000000),
VRPAIR(VLEV_120, 525000000),
VRPAIR(VLEV_125, 550000000),
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_bf548_devices[] __initdata = {

&bfin_dpmc,

#if defined(CONFIG_RTC_DRV_BFIN) || defined(CONFIG_RTC_DRV_BFIN_MODULE)
&rtc_device,
#endif
Expand Down
32 changes: 32 additions & 0 deletions arch/blackfin/mach-bf548/boards/ezkit.c
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Original file line number Diff line number Diff line change
Expand Up @@ -46,6 +46,7 @@
#include <asm/dma.h>
#include <asm/gpio.h>
#include <asm/nand.h>
#include <asm/dpmc.h>
#include <asm/portmux.h>
#include <asm/mach/bf54x_keys.h>
#include <linux/input.h>
Expand Down Expand Up @@ -689,7 +690,38 @@ static struct platform_device bfin_gpios_device = {
.resource = &bfin_gpios_resources,
};

static const unsigned int cclk_vlev_datasheet[] =
{
/*
* Internal VLEV BF54XSBBC1533
****temporarily using these values until data sheet is updated
*/
VRPAIR(VLEV_085, 150000000),
VRPAIR(VLEV_090, 250000000),
VRPAIR(VLEV_110, 276000000),
VRPAIR(VLEV_115, 301000000),
VRPAIR(VLEV_120, 525000000),
VRPAIR(VLEV_125, 550000000),
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_RTC_DRV_BFIN) || defined(CONFIG_RTC_DRV_BFIN_MODULE)
&rtc_device,
#endif
Expand Down
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