summaryrefslogtreecommitdiff
path: root/board/samsung
diff options
context:
space:
mode:
authorRajeshwari Shinde <rajeshwari.s@samsung.com>2013-02-12 20:40:02 +0000
committerMinkyu Kang <mk7.kang@samsung.com>2013-02-20 16:48:17 +0900
commitb278c4095b59c40ff512c5433b735b000e547554 (patch)
tree769b456e8c8003f161f323d98e9077fd9e73829a /board/samsung
parent51ff1eda6f788fc76666d275a87a7c7aff32baa8 (diff)
downloadu-boot-imx-b278c4095b59c40ff512c5433b735b000e547554.zip
u-boot-imx-b278c4095b59c40ff512c5433b735b000e547554.tar.gz
u-boot-imx-b278c4095b59c40ff512c5433b735b000e547554.tar.bz2
SMDK5250: Add PMIC voltage settings
This patch adds required pmic voltage settings for SMDK5250. Acked-by: Simon Glass <sjg@chromium.org> Signed-off-by: Rajeshwari Shinde <rajeshwari.s@samsung.com> Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
Diffstat (limited to 'board/samsung')
-rw-r--r--board/samsung/smdk5250/smdk5250.c113
1 files changed, 111 insertions, 2 deletions
diff --git a/board/samsung/smdk5250/smdk5250.c b/board/samsung/smdk5250/smdk5250.c
index 7a5f132..ffc5ee5 100644
--- a/board/samsung/smdk5250/smdk5250.c
+++ b/board/samsung/smdk5250/smdk5250.c
@@ -23,6 +23,7 @@
#include <common.h>
#include <fdtdec.h>
#include <asm/io.h>
+#include <errno.h>
#include <i2c.h>
#include <lcd.h>
#include <netdev.h>
@@ -35,6 +36,7 @@
#include <asm/arch/sromc.h>
#include <asm/arch/dp_info.h>
#include <power/pmic.h>
+#include <power/max77686_pmic.h>
DECLARE_GLOBAL_DATA_PTR;
@@ -80,12 +82,119 @@ int dram_init(void)
}
#if defined(CONFIG_POWER)
+static int pmic_reg_update(struct pmic *p, int reg, uint regval)
+{
+ u32 val;
+ int ret = 0;
+
+ ret = pmic_reg_read(p, reg, &val);
+ if (ret) {
+ debug("%s: PMIC %d register read failed\n", __func__, reg);
+ return -1;
+ }
+ val |= regval;
+ ret = pmic_reg_write(p, reg, val);
+ if (ret) {
+ debug("%s: PMIC %d register write failed\n", __func__, reg);
+ return -1;
+ }
+ return 0;
+}
+
int power_init_board(void)
{
+ struct pmic *p;
+
+ set_ps_hold_ctrl();
+
+ i2c_init(CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
+
if (pmic_init(I2C_PMIC))
return -1;
- else
- return 0;
+
+ p = pmic_get("MAX77686_PMIC");
+ if (!p)
+ return -ENODEV;
+
+ if (pmic_probe(p))
+ return -1;
+
+ if (pmic_reg_update(p, MAX77686_REG_PMIC_32KHZ, MAX77686_32KHCP_EN))
+ return -1;
+
+ if (pmic_reg_update(p, MAX77686_REG_PMIC_BBAT,
+ MAX77686_BBCHOSTEN | MAX77686_BBCVS_3_5V))
+ return -1;
+
+ /* VDD_MIF */
+ if (pmic_reg_write(p, MAX77686_REG_PMIC_BUCK1OUT,
+ MAX77686_BUCK1OUT_1V)) {
+ debug("%s: PMIC %d register write failed\n", __func__,
+ MAX77686_REG_PMIC_BUCK1OUT);
+ return -1;
+ }
+
+ if (pmic_reg_update(p, MAX77686_REG_PMIC_BUCK1CRTL,
+ MAX77686_BUCK1CTRL_EN))
+ return -1;
+
+ /* VDD_ARM */
+ if (pmic_reg_write(p, MAX77686_REG_PMIC_BUCK2DVS1,
+ MAX77686_BUCK2DVS1_1_3V)) {
+ debug("%s: PMIC %d register write failed\n", __func__,
+ MAX77686_REG_PMIC_BUCK2DVS1);
+ return -1;
+ }
+
+ if (pmic_reg_update(p, MAX77686_REG_PMIC_BUCK2CTRL1,
+ MAX77686_BUCK2CTRL_ON))
+ return -1;
+
+ /* VDD_INT */
+ if (pmic_reg_write(p, MAX77686_REG_PMIC_BUCK3DVS1,
+ MAX77686_BUCK3DVS1_1_0125V)) {
+ debug("%s: PMIC %d register write failed\n", __func__,
+ MAX77686_REG_PMIC_BUCK3DVS1);
+ return -1;
+ }
+
+ if (pmic_reg_update(p, MAX77686_REG_PMIC_BUCK3CTRL,
+ MAX77686_BUCK3CTRL_ON))
+ return -1;
+
+ /* VDD_G3D */
+ if (pmic_reg_write(p, MAX77686_REG_PMIC_BUCK4DVS1,
+ MAX77686_BUCK4DVS1_1_2V)) {
+ debug("%s: PMIC %d register write failed\n", __func__,
+ MAX77686_REG_PMIC_BUCK4DVS1);
+ return -1;
+ }
+
+ if (pmic_reg_update(p, MAX77686_REG_PMIC_BUCK4CTRL1,
+ MAX77686_BUCK3CTRL_ON))
+ return -1;
+
+ /* VDD_LDO2 */
+ if (pmic_reg_update(p, MAX77686_REG_PMIC_LDO2CTRL1,
+ MAX77686_LD02CTRL1_1_5V | EN_LDO))
+ return -1;
+
+ /* VDD_LDO3 */
+ if (pmic_reg_update(p, MAX77686_REG_PMIC_LDO3CTRL1,
+ MAX77686_LD03CTRL1_1_8V | EN_LDO))
+ return -1;
+
+ /* VDD_LDO5 */
+ if (pmic_reg_update(p, MAX77686_REG_PMIC_LDO5CTRL1,
+ MAX77686_LD05CTRL1_1_8V | EN_LDO))
+ return -1;
+
+ /* VDD_LDO10 */
+ if (pmic_reg_update(p, MAX77686_REG_PMIC_LDO10CTRL1,
+ MAX77686_LD10CTRL1_1_8V | EN_LDO))
+ return -1;
+
+ return 0;
}
#endif