From dcc88a170ce9f90e4b819c67feebb16e8a123f79 Mon Sep 17 00:00:00 2001
From: Mark Brown <broonie@sirena.org.uk>
Date: Wed, 13 Feb 2008 16:39:21 +0100
Subject: [PATCH] [ARM] 4830/1: Add support for the CLK_POUT pin on PXA3xx CPUs
Expose control of the PXA3xx 13MHz CLK_POUT pin via the clock API
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
---
arch/arm/mach-pxa/pxa3xx.c | 22 ++++++++++++++++++++++
include/asm-arm/arch-pxa/pxa3xx-regs.h | 9 +++++++++
2 files changed, 31 insertions(+)
diff --git a/arch/arm/mach-pxa/pxa3xx.c b/arch/arm/mach-pxa/pxa3xx.c
index 35f25fdaeba3..54c9e8371a21 100644
--- a/arch/arm/mach-pxa/pxa3xx.c
+++ b/arch/arm/mach-pxa/pxa3xx.c
@@ -156,6 +156,21 @@ static const struct clkops clk_pxa3xx_hsio_ops = {
.getrate = clk_pxa3xx_hsio_getrate,
};
+static void clk_pout_enable(struct clk *clk)
+{
+ OSCC |= OSCC_PEN;
+}
+
+static void clk_pout_disable(struct clk *clk)
+{
+ OSCC &= ~OSCC_PEN;
+}
+
+static const struct clkops clk_pout_ops = {
+ .enable = clk_pout_enable,
+ .disable = clk_pout_disable,
+};
+
#define PXA3xx_CKEN(_name, _cken, _rate, _delay, _dev) \
{ \
.name = _name, \
@@ -175,6 +190,13 @@ static const struct clkops clk_pxa3xx_hsio_ops = {
}
static struct clk pxa3xx_clks[] = {
+ {
+ .name = "CLK_POUT",
+ .ops = &clk_pout_ops,
+ .rate = 13000000,
+ .delay = 70,
+ },
+
PXA3xx_CK("LCDCLK", LCD, &clk_pxa3xx_hsio_ops, &pxa_device_fb.dev),
PXA3xx_CK("CAMCLK", CAMERA, &clk_pxa3xx_hsio_ops, NULL),
diff --git a/include/asm-arm/arch-pxa/pxa3xx-regs.h b/include/asm-arm/arch-pxa/pxa3xx-regs.h
index 8e1b3ead827f..fe9364c83a28 100644
--- a/include/asm-arm/arch-pxa/pxa3xx-regs.h
+++ b/include/asm-arm/arch-pxa/pxa3xx-regs.h
@@ -12,6 +12,15 @@
#ifndef __ASM_ARCH_PXA3XX_REGS_H
#define __ASM_ARCH_PXA3XX_REGS_H
+
+/*
+ * Oscillator Configuration Register (OSCC)
+ */
+#define OSCC __REG(0x41350000) /* Oscillator Configuration Register */
+
+#define OSCC_PEN (1 << 11) /* 13MHz POUT */
+
+
/*
* Service Power Management Unit (MPMU)
*/
--
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