[ARM] pxa: introduce clk support for PXA SoC clocks
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/mach-pxa/pxa25x.c b/arch/arm/mach-pxa/pxa25x.c
index bcf3f0a..62a7701 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 @@
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 @@
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