To allow PXA3xx nand driver to be reused on Marvell Armada 370/XP,
prepare to provide a common clock for the NAND driver on PXA3xx.
Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@xxxxxxxxx>
Acked-by: Robert Jarzmik <robert.jarzmik@xxxxxxx>
Tested-by: Robert Jarzmik <robert.jarzmik@xxxxxxx>
---
arch/arm/Kconfig | 1 +
arch/arm/mach-pxa/Kconfig | 2 ++
arch/arm/mach-pxa/speed-pxa3xx.c | 18 ++++++++++++++++++
3 files changed, 21 insertions(+)
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index c03f7dc8830b..9f4d8e958794 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -152,6 +152,7 @@ config ARCH_PXA
bool "Intel/Marvell PXA based"
select GENERIC_GPIO
select HAS_POWEROFF
+ select HAVE_CLK
config ARCH_ROCKCHIP
bool "Rockchip RX3xxx"
diff --git a/arch/arm/mach-pxa/Kconfig b/arch/arm/mach-pxa/Kconfig
index 54094f4ca0ed..1c0894892b17 100644
--- a/arch/arm/mach-pxa/Kconfig
+++ b/arch/arm/mach-pxa/Kconfig
@@ -17,6 +17,8 @@ config ARCH_PXA2XX
config ARCH_PXA3XX
bool
select CPU_XSC3
+ select CLKDEV_LOOKUP
+ select COMMON_CLK
config ARCH_PXA310
bool
diff --git a/arch/arm/mach-pxa/speed-pxa3xx.c b/arch/arm/mach-pxa/speed-pxa3xx.c
index 6a08ea78f065..102951736dc0 100644
--- a/arch/arm/mach-pxa/speed-pxa3xx.c
+++ b/arch/arm/mach-pxa/speed-pxa3xx.c
@@ -8,6 +8,9 @@
*/
#include <common.h>
+#include <init.h>
+#include <linux/clk.h>
+#include <linux/clkdev.h>
#include <mach/clock.h>
#include <mach/pxa-regs.h>
@@ -31,3 +34,18 @@ unsigned long pxa_get_nandclk(void)
else
return 156000000;
}
+
+static int pxa3xx_clock_init(void)
+{
+ unsigned long nand_rate = (cpu_is_pxa320()) ? 104000000 : 156000000;
+ struct clk *clk;
+ int ret;
+
+ clk = clk_fixed("nand", nand_rate);
+ ret = clk_register_clkdev(clk, NULL, "nand");
+ if (ret)
+ return ret;
+
+ return 0;
+}
+postcore_initcall(pxa3xx_clock_init);
--
2.1.4
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