From: "Mathieu J. Poirier" <mathieu.poir...@linaro.org>
Functions such as providing power to the MMC device and reading
the processor version register should be in the cpu area for
access by multiple u8500-based boards.
Signed-off-by: Mathieu Poirier <mathieu.poir...@linaro.org>
Signed-off-by: John Rigby <john.ri...@linaro.org>
---
arch/arm/cpu/armv7/u8500/cpu.c | 86 +++++++++++++++++++++++++++
arch/arm/include/asm/arch-u8500/sys_proto.h | 1 +
board/st-ericsson/u8500/u8500_href.c | 75 +-----------------------
3 files changed, 88 insertions(+), 74 deletions(-)
diff --git a/arch/arm/cpu/armv7/u8500/cpu.c b/arch/arm/cpu/armv7/u8500/cpu.c
index fece201..593199c 100644
--- a/arch/arm/cpu/armv7/u8500/cpu.c
+++ b/arch/arm/cpu/armv7/u8500/cpu.c
@@ -28,6 +28,30 @@
#include <asm/io.h>
#include <asm/arch/prcmu.h>
#include <asm/arch/clock.h>
+#include <asm/arch/hardware.h>
+
+#include <asm/arch/hardware.h>
+
+#define CPUID_DB8500V1 0x411fc091
+#define CPUID_DB8500V2 0x412fc091
+#define ASICID_DB8500V11 0x008500A1
+
+static unsigned int read_asicid(void)
+{
+ unsigned int *address = (void *)U8500_BOOTROM_BASE
+ + U8500_BOOTROM_ASIC_ID_OFFSET;
+ return readl(address);
+}
+
+static int cpu_is_u8500v11(void)
+{
+ return read_asicid() == ASICID_DB8500V11;
+}
+
+static int cpu_is_u8500v2(void)
+{
+ return read_cpuid() == CPUID_DB8500V2;
+}
#ifdef CONFIG_ARCH_CPU_INIT
/*
@@ -41,3 +65,65 @@ int arch_cpu_init(void)
return 0;
}
#endif /* CONFIG_ARCH_CPU_INIT */
+
+#ifdef CONFIG_MMC
+
+#define LDO_VAUX3_MASK 0x3
+#define LDO_VAUX3_ENABLE 0x1
+#define VAUX3_VOLTAGE_2_9V 0xd
+
+#define AB8500_REGU_CTRL2 0x4
+#define AB8500_REGU_VRF1VAUX3_REGU_REG 0x040A
+#define AB8500_REGU_VRF1VAUX3_SEL_REG 0x0421
+
+int u8500_mmc_power_init(void)
+{
+ int ret;
+ int val;
+
+ if (!cpu_is_u8500v11())
+ return 0;
+
+ /*
+ * On v1.1 HREF boards (HREF+), Vaux3 needs to be enabled for the SD
+ * card to work. This is done by enabling the regulators in the AB8500
+ * via PRCMU I2C transactions.
+ *
+ * This code is derived from the handling of AB8500_LDO_VAUX3 in
+ * ab8500_ldo_enable() and ab8500_ldo_disable() in Linux.
+ *
+ * Turn off and delay is required to have it work across soft reboots.
+ */
+
+ ret = prcmu_i2c_read(AB8500_REGU_CTRL2, AB8500_REGU_VRF1VAUX3_REGU_REG);
+ if (ret < 0)
+ goto out;
+
+ val = ret;
+
+ /* Turn off */
+ ret = prcmu_i2c_write(AB8500_REGU_CTRL2, AB8500_REGU_VRF1VAUX3_REGU_REG,
+ val & ~LDO_VAUX3_MASK);
+ if (ret < 0)
+ goto out;
+
+ udelay(10 * 1000);
+
+ /* Set the voltage to 2.9V */
+ ret = prcmu_i2c_write(AB8500_REGU_CTRL2,
+ AB8500_REGU_VRF1VAUX3_SEL_REG,
+ VAUX3_VOLTAGE_2_9V);
+ if (ret < 0)
+ goto out;
+
+ val = val & ~LDO_VAUX3_MASK;
+ val = val | LDO_VAUX3_ENABLE;
+
+ /* Turn on the supply */
+ ret = prcmu_i2c_write(AB8500_REGU_CTRL2,
+ AB8500_REGU_VRF1VAUX3_REGU_REG, val);
+
+out:
+ return ret;
+}
+#endif /* CONFIG_MMC */
diff --git a/arch/arm/include/asm/arch-u8500/sys_proto.h
b/arch/arm/include/asm/arch-u8500/sys_proto.h
index bac5e79..a8ef9e5 100644
--- a/arch/arm/include/asm/arch-u8500/sys_proto.h
+++ b/arch/arm/include/asm/arch-u8500/sys_proto.h
@@ -23,5 +23,6 @@
#define _SYS_PROTO_H_
void gpio_init(void);
+int u8500_mmc_power_init(void);
#endif /* _SYS_PROTO_H_ */
diff --git a/board/st-ericsson/u8500/u8500_href.c
b/board/st-ericsson/u8500/u8500_href.c
index fe72684..e75f8b4 100644
--- a/board/st-ericsson/u8500/u8500_href.c
+++ b/board/st-ericsson/u8500/u8500_href.c
@@ -139,18 +139,6 @@ void show_boot_progress(int progress)
}
#endif
-static unsigned int read_asicid(void)
-{
- unsigned int *address = (void *)U8500_BOOTROM_BASE
- + U8500_BOOTROM_ASIC_ID_OFFSET;
- return readl(address);
-}
-
-int cpu_is_u8500v11(void)
-{
- return read_asicid() == 0x008500A1;
-}
-
/*
* Miscellaneous platform dependent initialisations
*/
@@ -227,67 +215,6 @@ unsigned int addr_vall_arr[] = {
};
#ifdef CONFIG_BOARD_LATE_INIT
-#ifdef CONFIG_MMC
-
-#define LDO_VAUX3_MASK 0x3
-#define LDO_VAUX3_ENABLE 0x1
-#define VAUX3_VOLTAGE_2_9V 0xd
-
-#define AB8500_REGU_CTRL2 0x4
-#define AB8500_REGU_VRF1VAUX3_REGU_REG 0x040A
-#define AB8500_REGU_VRF1VAUX3_SEL_REG 0x0421
-
-static int hrefplus_mmc_power_init(void)
-{
- int ret;
- int val;
-
- if (!cpu_is_u8500v11())
- return 0;
-
- /*
- * On v1.1 HREF boards (HREF+), Vaux3 needs to be enabled for the SD
- * card to work. This is done by enabling the regulators in the AB8500
- * via PRCMU I2C transactions.
- *
- * This code is derived from the handling of AB8500_LDO_VAUX3 in
- * ab8500_ldo_enable() and ab8500_ldo_disable() in Linux.
- *
- * Turn off and delay is required to have it work across soft reboots.
- */
-
- ret = prcmu_i2c_read(AB8500_REGU_CTRL2, AB8500_REGU_VRF1VAUX3_REGU_REG);
- if (ret < 0)
- goto out;
-
- val = ret;
-
- /* Turn off */
- ret = prcmu_i2c_write(AB8500_REGU_CTRL2, AB8500_REGU_VRF1VAUX3_REGU_REG,
- val & ~LDO_VAUX3_MASK);
- if (ret < 0)
- goto out;
-
- udelay(10 * 1000);
-
- /* Set the voltage to 2.9V */
- ret = prcmu_i2c_write(AB8500_REGU_CTRL2,
- AB8500_REGU_VRF1VAUX3_SEL_REG,
- VAUX3_VOLTAGE_2_9V);
- if (ret < 0)
- goto out;
-
- val = val & ~LDO_VAUX3_MASK;
- val = val | LDO_VAUX3_ENABLE;
-
- /* Turn on the supply */
- ret = prcmu_i2c_write(AB8500_REGU_CTRL2,
- AB8500_REGU_VRF1VAUX3_REGU_REG, val);
-
-out:
- return ret;
-}
-#endif
/*
* called after all initialisation were done, but before the generic
* mmc_initialize().
@@ -314,7 +241,7 @@ int board_late_init(void)
setenv("board_id", "1");
}
#ifdef CONFIG_MMC
- hrefplus_mmc_power_init();
+ u8500_mmc_power_init();
/*
* config extended GPIO pins for level shifter and
--
1.7.5.4
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