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authorMathieu J. Poirier <mathieu.poirier@linaro.org>2012-07-31 08:59:28 +0000
committerAlbert ARIBAUD <albert.u.boot@aribaud.net>2012-09-01 14:58:20 +0200
commitb95f9ec7d88b2b2362fab39a66fdccb3d6be53d4 (patch)
tree142d4a2e4010c1d395122e9ca1c1f0d6d5cd3394 /board/st-ericsson
parent101a769d75ffd06b7316d7bd4e896b95af7cb6d4 (diff)
snowball: applying power to LAN and GBF controllers
LAN and GBF need to be powered explicitely, doing so with interface to AB8500 companion chip. Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: John Rigby <john.rigby@linaro.org>
Diffstat (limited to 'board/st-ericsson')
-rw-r--r--board/st-ericsson/snowball/snowball.c87
1 files changed, 87 insertions, 0 deletions
diff --git a/board/st-ericsson/snowball/snowball.c b/board/st-ericsson/snowball/snowball.c
index 4bcc649724b..7c3e08ce3f5 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"
@@ -164,3 +166,88 @@ 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;
+}