diff options
| author | Mathieu J. Poirier <mathieu.poirier@linaro.org> | 2012-07-31 08:59:28 +0000 |
|---|---|---|
| committer | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2012-09-01 14:58:20 +0200 |
| commit | b95f9ec7d88b2b2362fab39a66fdccb3d6be53d4 (patch) | |
| tree | 142d4a2e4010c1d395122e9ca1c1f0d6d5cd3394 /board | |
| parent | 101a769d75ffd06b7316d7bd4e896b95af7cb6d4 (diff) | |
| download | u-boot-imx-b95f9ec7d88b2b2362fab39a66fdccb3d6be53d4.zip u-boot-imx-b95f9ec7d88b2b2362fab39a66fdccb3d6be53d4.tar.gz u-boot-imx-b95f9ec7d88b2b2362fab39a66fdccb3d6be53d4.tar.bz2 | |
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')
| -rw-r--r-- | board/st-ericsson/snowball/snowball.c | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/board/st-ericsson/snowball/snowball.c b/board/st-ericsson/snowball/snowball.c index 4bcc649..7c3e08c 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; +} |