--- /dev/null
+/*
+ * Copyright (C) 2014 Lothar Waßmann <LW@KARO-electronics.de>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#include <common.h>
+#include <i2c.h>
+
+#include "pmic.h"
+
+#define RN5T567_NOETIMSET 0x11
+#define RN5T567_LDORTC1_SLOT 0x2a
+#define RN5T567_DC1CTL 0x2c
+#define RN5T567_DC1CTL2 0x2d
+#define RN5T567_DC2CTL 0x2e
+#define RN5T567_DC2CTL2 0x2f
+#define RN5T567_DC3CTL 0x30
+#define RN5T567_DC3CTL2 0x31
+#define RN5T567_DC1DAC 0x36 /* CORE */
+#define RN5T567_DC2DAC 0x37 /* SOC */
+#define RN5T567_DC3DAC 0x38 /* DDR */
+#define RN5T567_DC1DAC_SLP 0x3b
+#define RN5T567_DC2DAC_SLP 0x3c
+#define RN5T567_DC3DAC_SLP 0x3d
+#define RN5T567_LDOEN1 0x44
+#define RN5T567_LDODIS 0x46
+#define RN5T567_LDOEN2 0x48
+#define RN5T567_LDO3DAC 0x4e /* IO */
+#define RN5T567_LDORTC1DAC 0x56 /* VBACKUP */
+
+#define NOETIMSET_DIS_OFF_NOE_TIM (1 << 3)
+
+#define VDD_RTC_VAL mV_to_regval_rtc(3000 * 10)
+#define VDD_HIGH_VAL mV_to_regval3(3000 * 10)
+#define VDD_HIGH_VAL_LP mV_to_regval3(3000 * 10)
+#define VDD_CORE_VAL mV_to_regval(1425 * 10)
+#define VDD_CORE_VAL_LP mV_to_regval(900 * 10)
+#define VDD_SOC_VAL mV_to_regval(1425 * 10)
+#define VDD_SOC_VAL_LP mV_to_regval(900 * 10)
+#define VDD_DDR_VAL mV_to_regval(1500 * 10)
+#define VDD_DDR_VAL_LP mV_to_regval(1500 * 10)
+
+/* calculate voltages in 10mV */
+/* DCDC1-3 */
+#define mV_to_regval(mV) DIV_ROUND(((((mV) < 6000) ? 6000 : (mV)) - 6000), 125)
+#define regval_to_mV(v) (((v) * 125 + 6000))
+
+/* LDO1-2 */
+#define mV_to_regval2(mV) DIV_ROUND(((((mV) < 9000) ? 9000 : (mV)) - 9000), 250)
+#define regval2_to_mV(v) (((v) * 250 + 9000))
+
+/* LDO3 */
+#define mV_to_regval3(mV) DIV_ROUND(((((mV) < 6000) ? 6000 : (mV)) - 6000), 250)
+#define regval3_to_mV(v) (((v) * 250 + 6000))
+
+/* LDORTC */
+#define mV_to_regval_rtc(mV) DIV_ROUND(((((mV) < 17000) ? 17000 : (mV)) - 17000), 250)
+#define regval_rtc_to_mV(v) (((v) * 250 + 17000))
+
+static struct rn5t567_regs {
+ u8 addr;
+ u8 val;
+ u8 mask;
+} rn5t567_regs[] = {
+ { RN5T567_NOETIMSET, NOETIMSET_DIS_OFF_NOE_TIM | 0x5, },
+#if 0
+ { RN5T567_DC1DAC, VDD_CORE_VAL, },
+ { RN5T567_DC2DAC, VDD_SOC_VAL, },
+ { RN5T567_DC3DAC, VDD_DDR_VAL, },
+ { RN5T567_DC1DAC_SLP, VDD_CORE_VAL_LP, },
+ { RN5T567_DC2DAC_SLP, VDD_SOC_VAL_LP, },
+ { RN5T567_DC3DAC_SLP, VDD_DDR_VAL_LP, },
+ { RN5T567_LDOEN1, 0x01f, ~0x1f, },
+ { RN5T567_LDOEN2, 0x10, ~0x30, },
+ { RN5T567_LDODIS, 0x00, },
+ { RN5T567_LDO3DAC, VDD_HIGH_VAL, },
+ { RN5T567_LDORTCDAC, VDD_RTC_VAL, },
+ { RN5T567_LDORTC1_SLOT, 0x0f, ~0x3f, },
+#endif
+};
+
+static struct rn5t567_regs debug_regs[] __maybe_unused = {
+ { 0x00, 4, },
+ { 0x09, 4, },
+ { 0x10, 16, },
+ { 0x25, 26, },
+ { 0x44, 3, },
+ { 0x4c, 5, },
+ { 0x56, 1, },
+ { 0x58, 5, },
+ { 0x97, 2, },
+ { 0xb0, 1, },
+ { 0xbc, 1, },
+};
+
+static int rn5t567_setup_regs(struct rn5t567_regs *r, size_t count)
+{
+ int ret;
+ int i;
+
+ for (i = 0; i < count; i++, r++) {
+#ifdef DEBUG
+ unsigned char value;
+
+ ret = i2c_read(CONFIG_SYS_I2C_SLAVE, r->addr, 1, &value, 1);
+ if ((value & ~r->mask) != r->val) {
+ printf("Changing PMIC reg %02x from %02x to %02x\n",
+ r->addr, value, r->val);
+ }
+ if (ret) {
+ printf("%s: failed to read PMIC register %02x: %d\n",
+ __func__, r->addr, ret);
+ return ret;
+ }
+#endif
+// value = (value & ~r->mask) | r->val;
+ ret = i2c_write(CONFIG_SYS_I2C_SLAVE,
+ r->addr, 1, &r->val, 1);
+ if (ret) {
+ printf("%s: failed to write PMIC register %02x: %d\n",
+ __func__, r->addr, ret);
+ return ret;
+ }
+#ifdef DEBUG
+ ret = i2c_read(CONFIG_SYS_I2C_SLAVE, r->addr, 1, &value, 1);
+ printf("PMIC reg %02x is %02x\n", r->addr, value);
+#endif
+ }
+#if 0
+ for (i = 0; i < ARRAY_SIZE(debug_regs); i++) {
+ int j;
+
+ r = &debug_regs[i];
+ for (j = r->addr; j < r->addr + r->val; j++) {
+ unsigned char value;
+
+ ret = i2c_read(CONFIG_SYS_I2C_SLAVE, j, 1, &value, 1);
+ printf("PMIC reg %02x = %02x\n",
+ j, value);
+ }
+ }
+#endif
+ debug("%s() complete\n", __func__);
+ return 0;
+}
+
+int setup_pmic_voltages(void)
+{
+ int ret;
+ unsigned char value;
+
+ ret = i2c_probe(CONFIG_SYS_I2C_SLAVE);
+ if (ret != 0) {
+ printf("Failed to initialize I2C\n");
+ return ret;
+ }
+
+ ret = i2c_read(CONFIG_SYS_I2C_SLAVE, 0x11, 1, &value, 1);
+ if (ret) {
+ printf("%s: i2c_read error: %d\n", __func__, ret);
+ return ret;
+ }
+
+ ret = rn5t567_setup_regs(rn5t567_regs, ARRAY_SIZE(rn5t567_regs));
+ if (ret)
+ return ret;
+
+ printf("VDDCORE set to %umV\n",
+ DIV_ROUND(regval_to_mV(VDD_CORE_VAL), 10));
+ printf("VDDSOC set to %umV\n",
+ DIV_ROUND(regval_to_mV(VDD_SOC_VAL), 10));
+
+ return ret;
+}
projects / karo-tx-uboot.git / blobdiff