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| author | Russell King | 2007-08-20 11:18:02 +0200 |
|---|---|---|
| committer | Russell King | 2007-10-12 22:14:55 +0200 |
| commit | a6dba20c5c7b3a18d69bcbd60a1d2ebc0536f0ce (patch) | |
| tree | 954e4f3aa86f730fc4b8834126e7886022c0dccf /arch/arm/mach-pxa/pxa25x.c | |
| parent | [ARM] pxa: make pxa27x devices globally visible (diff) | |
| download | kernel-qcow2-linux-a6dba20c5c7b3a18d69bcbd60a1d2ebc0536f0ce.tar.gz kernel-qcow2-linux-a6dba20c5c7b3a18d69bcbd60a1d2ebc0536f0ce.tar.xz kernel-qcow2-linux-a6dba20c5c7b3a18d69bcbd60a1d2ebc0536f0ce.zip | |
[ARM] pxa: introduce clk support for PXA SoC clocks
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-pxa/pxa25x.c')
| -rw-r--r-- | arch/arm/mach-pxa/pxa25x.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/arch/arm/mach-pxa/pxa25x.c b/arch/arm/mach-pxa/pxa25x.c index bcf3f0a78463..62a770121bfa 100644 --- a/arch/arm/mach-pxa/pxa25x.c +++ b/arch/arm/mach-pxa/pxa25x.c @@ -30,6 +30,7 @@ #include "generic.h" #include "devices.h" +#include "clock.h" /* * Various clock factors driven by the CCCR register. @@ -94,6 +95,41 @@ unsigned int pxa25x_get_memclk_frequency_10khz(void) return L_clk_mult[(CCCR >> 0) & 0x1f] * BASE_CLK / 10000; } +static unsigned long clk_pxa25x_lcd_getrate(struct clk *clk) +{ + return pxa25x_get_memclk_frequency_10khz() * 10000; +} + +static const struct clkops clk_pxa25x_lcd_ops = { + .enable = clk_cken_enable, + .disable = clk_cken_disable, + .getrate = clk_pxa25x_lcd_getrate, +}; + +/* + * 3.6864MHz -> OST, GPIO, SSP, PWM, PLLs (95.842MHz, 147.456MHz) + * 95.842MHz -> MMC 19.169MHz, I2C 31.949MHz, FICP 47.923MHz, USB 47.923MHz + * 147.456MHz -> UART 14.7456MHz, AC97 12.288MHz, I2S 5.672MHz (allegedly) + */ +static struct clk pxa25x_clks[] = { + INIT_CK("LCDCLK", LCD, &clk_pxa25x_lcd_ops, &pxa_device_fb.dev), + INIT_CKEN("UARTCLK", FFUART, 14745600, 1, &pxa_device_ffuart.dev), + INIT_CKEN("UARTCLK", BTUART, 14745600, 1, &pxa_device_btuart.dev), + INIT_CKEN("UARTCLK", STUART, 14745600, 1, &pxa_device_stuart.dev), + INIT_CKEN("UARTCLK", BTUART, 14745600, 1, &pxa_device_btuart.dev), + INIT_CKEN("UDCCLK", USB, 47923000, 5, &pxa_device_udc.dev), + INIT_CKEN("MMCCLK", MMC, 19169000, 0, &pxa_device_mci.dev), + INIT_CKEN("I2CCLK", I2C, 31949000, 0, &pxa_device_i2c.dev), + /* + INIT_CKEN("PWMCLK", PWM0, 3686400, 0, NULL), + INIT_CKEN("PWMCLK", PWM0, 3686400, 0, NULL), + INIT_CKEN("SSPCLK", SSP, 3686400, 0, NULL), + INIT_CKEN("I2SCLK", I2S, 14745600, 0, NULL), + INIT_CKEN("NSSPCLK", NSSP, 3686400, 0, NULL), + INIT_CKEN("FICPCLK", FICP, 47923000, 0, NULL), + */ +}; + #ifdef CONFIG_PM #define SAVE(x) sleep_save[SLEEP_SAVE_##x] = x @@ -215,6 +251,8 @@ static int __init pxa25x_init(void) int ret = 0; if (cpu_is_pxa21x() || cpu_is_pxa25x()) { + clks_register(pxa25x_clks, ARRAY_SIZE(pxa25x_clks)); + if ((ret = pxa_init_dma(16))) return ret; #ifdef CONFIG_PM |