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>

diff --git a/board/samsung/smdk5250/smdk5250.c b/board/samsung/smdk5250/smdk5250.c
index 7a5f132ebb753a8519834b1e995f9810d414daf9..ffc5ee5a615b19741742a5d8dce0ba68268794b7 100644 (file)
--- 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
 

diff --git a/include/power/max77686_pmic.h b/include/power/max77686_pmic.h
index d949aced0921630b68c78514dbc2d136c041e8c8..fdc7ca9e5a02954f16c4dd116cea4aba4d29efee 100644 (file)
--- a/include/power/max77686_pmic.h
+++ b/include/power/max77686_pmic.h
@@ -155,4 +155,36 @@ enum {
        EN_LDO = (0x3 << 6),
 };
 
+/* Buck1 1 volt value */
+#define MAX77686_BUCK1OUT_1V   0x5
+#define MAX77686_BUCK1CTRL_EN  (3 << 0)
+/* Buck2 1.3 volt value */
+#define MAX77686_BUCK2DVS1_1_3V        0x38
+#define MAX77686_BUCK2CTRL_ON  (1 << 4)
+/* Buck3 1.0125 volt value */
+#define MAX77686_BUCK3DVS1_1_0125V     0x21
+#define MAX77686_BUCK3CTRL_ON  (1 << 4)
+/* Buck4 1.2 volt value */
+#define MAX77686_BUCK4DVS1_1_2V        0x30
+#define MAX77686_BUCK4CTRL_ON  (1 << 4)
+/* LDO2 1.5 volt value */
+#define MAX77686_LD02CTRL1_1_5V        0x1c
+/* LDO3 1.8 volt value */
+#define MAX77686_LD03CTRL1_1_8V        0x14
+/* LDO5 1.8 volt value */
+#define MAX77686_LD05CTRL1_1_8V        0x14
+/* LDO10 1.8 volt value */
+#define MAX77686_LD10CTRL1_1_8V        0x14
+/*
+ * MAX77686_REG_PMIC_32KHZ set to 32KH CP
+ * output is activated
+ */
+#define MAX77686_32KHCP_EN     (1 << 1)
+/*
+ * MAX77686_REG_PMIC_BBAT set to
+ * Back up batery charger on and
+ * limit voltage setting to 3.5v
+ */
+#define MAX77686_BBCHOSTEN     (1 << 0)
+#define MAX77686_BBCVS_3_5V    (3 << 3)
 #endif /* __MAX77686_PMIC_H_ */