From: "Mathieu J. Poirier" <mathieu.poir...@linaro.org>
LAN and GBF need to be powered explicitely, doing so with
interface to AB8500 companion chip.
Signed-off-by: Mathieu Poirier <mathieu.poir...@linaro.org>
Signed-off-by: John Rigby <john.ri...@linaro.org>
---
Changes for v2:
- Cleaned #defines in snowball.h
---
arch/arm/include/asm/arch-u8500/hardware.h | 11 +++-
arch/arm/include/asm/arch-u8500/prcmu.h | 7 ++-
board/st-ericsson/snowball/snowball.c | 87 ++++++++++++++++++++++++++++
include/configs/snowball.h | 1 +
4 files changed, 103 insertions(+), 3 deletions(-)
diff --git a/arch/arm/include/asm/arch-u8500/hardware.h
b/arch/arm/include/asm/arch-u8500/hardware.h
index 9208880..8044ac3 100644
--- a/arch/arm/include/asm/arch-u8500/hardware.h
+++ b/arch/arm/include/asm/arch-u8500/hardware.h
@@ -62,7 +62,7 @@
/* Per4 */
#define U8500_PRCMU_BASE (U8500_PER4_BASE + 0x07000)
-#define U8500_PRCMU_TCDM_BASE (U8500_PER4_BASE + 0x06800)
+#define U8500_PRCMU_TCDM_BASE (U8500_PER4_BASE + 0x68000)
/* Per3 */
#define U8500_UART2_BASE (U8500_PER3_BASE + 0x7000)
@@ -80,4 +80,13 @@
#define U8500_BOOTROM_BASE 0x9001f000
#define U8500_BOOTROM_ASIC_ID_OFFSET 0x0ff4
+/* AB8500 specifics */
+#define AB8500_MISC 0x0010
+#define AB8500_GPIO_SEL2_REG 0x1001
+#define AB8500_GPIO_DIR2_REG 0x1011
+#define AB8500_GPIO_DIR4_REG 0x1013
+#define AB8500_GPIO_SEL4_REG 0x1003
+#define AB8500_GPIO_OUT2_REG 0x1021
+#define AB8500_GPIO_OUT4_REG 0x1023
+
#endif /* __ASM_ARCH_HARDWARE_H */
diff --git a/arch/arm/include/asm/arch-u8500/prcmu.h
b/arch/arm/include/asm/arch-u8500/prcmu.h
index 9862eb3..e9dcc93 100644
--- a/arch/arm/include/asm/arch-u8500/prcmu.h
+++ b/arch/arm/include/asm/arch-u8500/prcmu.h
@@ -64,8 +64,11 @@
#define REQ_MB5 5
-extern int prcmu_i2c_read(u8 reg, u16 slave);
-extern int prcmu_i2c_write(u8 reg, u16 slave, u8 reg_data);
+#define ab8500_read prcmu_i2c_read
+#define ab8500_write prcmu_i2c_write
+
+int prcmu_i2c_read(u8 reg, u16 slave);
+int prcmu_i2c_write(u8 reg, u16 slave, u8 reg_data);
void u8500_prcmu_enable(u32 *reg);
void db8500_prcmu_init(void);
diff --git a/board/st-ericsson/snowball/snowball.c
b/board/st-ericsson/snowball/snowball.c
index 79c86df..bc95c50 100644
--- a/board/st-ericsson/snowball/snowball.c
+++ b/board/st-ericsson/snowball/snowball.c
@@ -25,6 +25,8 @@
#include <asm/io.h>
#include <asm/errno.h>
#include <asm/arch/db8500_pincfg.h>
+#include <asm/arch/prcmu.h>
+#include <asm/arch/hardware.h>
#include "db8500_pins.h"
@@ -183,3 +185,88 @@ int dram_init(void)
return 0;
}
+
+static int raise_ab8500_gpio16(void)
+{
+ int ret;
+
+ /* selection */
+ ret = ab8500_read(AB8500_MISC, AB8500_GPIO_SEL2_REG);
+ if (ret < 0)
+ goto out;
+
+ ret |= 0x80;
+ ret = ab8500_write(AB8500_MISC, AB8500_GPIO_SEL2_REG, ret);
+ if (ret < 0)
+ goto out;
+
+ /* direction */
+ ret = ab8500_read(AB8500_MISC, AB8500_GPIO_DIR2_REG);
+ if (ret < 0)
+ goto out;
+
+ ret |= 0x80;
+ ret = ab8500_write(AB8500_MISC, AB8500_GPIO_DIR2_REG, ret);
+ if (ret < 0)
+ goto out;
+
+ /* out */
+ ret = ab8500_read(AB8500_MISC, AB8500_GPIO_OUT2_REG);
+ if (ret < 0)
+ goto out;
+
+ ret |= 0x80;
+ ret = ab8500_write(AB8500_MISC, AB8500_GPIO_OUT2_REG, ret);
+
+out:
+ return ret;
+}
+
+static int raise_ab8500_gpio26(void)
+{
+ int ret;
+
+ /* selection */
+ ret = ab8500_read(AB8500_MISC, AB8500_GPIO_DIR4_REG);
+ if (ret < 0)
+ goto out;
+
+ ret |= 0x2;
+ ret = ab8500_write(AB8500_MISC, AB8500_GPIO_DIR4_REG, ret);
+ if (ret < 0)
+ goto out;
+
+ /* out */
+ ret = ab8500_read(AB8500_MISC, AB8500_GPIO_OUT4_REG);
+ if (ret < 0)
+ goto out;
+
+ ret |= 0x2;
+ ret = ab8500_write(AB8500_MISC, AB8500_GPIO_OUT4_REG, ret);
+
+out:
+ return ret;
+}
+
+int board_late_init(void)
+{
+ /* enable 3V3 for LAN controller */
+ if (raise_ab8500_gpio26() >= 0) {
+ /* Turn on FSMC device */
+ writel(0x1, 0x8000f000);
+ writel(0x1, 0x8000f008);
+
+ /* setup FSMC for LAN controler */
+ writel(0x305b, 0x80000000);
+
+ /* run at the highest possible speed */
+ writel(0x01010210, 0x80000004);
+ } else
+ printf("error: can't raise GPIO26\n");
+
+ /* enable 3v6 for GBF chip */
+ if ((raise_ab8500_gpio16() < 0))
+ printf("error: cant' raise GPIO16\n");
+
+ return 0;
+}
diff --git a/include/configs/snowball.h b/include/configs/snowball.h
index 15cb78b..a818b48 100644
--- a/include/configs/snowball.h
+++ b/include/configs/snowball.h
@@ -32,6 +32,7 @@
#define CONFIG_SYS_ICACHE_OFF
#define CONFIG_SYS_DCACHE_OFF
#define CONFIG_ARCH_CPU_INIT
+#define CONFIG_BOARD_LATE_INIT
/*
* High Level Configuration Options
--
1.7.5.4
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