mediatek/mt8173: Add da9212 driver
Add secondary PMIC for external buck control on Oak rev0/1/2/5 BRANCH=none BUG=none TEST=verified on Oak rev4/rev5 Change-Id: Ia000b0c7d61e8396856656247f9627e33b21b19b Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Original-Commit-Id: 241508e7d781fac8ee085ee81962043dd654c52d Original-Change-Id: I6c75e2462363a5523bf1ebb03af7a36740293624 Original-Signed-off-by: henryc.chen <henryc.chen@mediatek.com> Original-Reviewed-on: https://chromium-review.googlesource.com/332342 Original-Commit-Ready: Yidi Lin <yidi.lin@mediatek.com> Original-Tested-by: Yidi Lin <yidi.lin@mediatek.com> Original-Reviewed-by: Julius Werner <jwerner@chromium.org> Reviewed-on: https://review.coreboot.org/14122 Tested-by: build bot (Jenkins) Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
This commit is contained in:
henryc.chen
Martin Roth
parent
7c54d2a760
commit
0bb292e384
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@ -67,6 +67,7 @@ ramstage-y += timer.c
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ramstage-$(CONFIG_DRIVERS_UART) += uart.c
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ramstage-y += pmic_wrap.c mt6391.c i2c.c
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ramstage-y += mt6311.c
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ramstage-y += da9212.c
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ramstage-y += gpio.c
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ramstage-y += wdt.c
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ramstage-y += pll.c
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@ -0,0 +1,96 @@
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/*
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* This file is part of the coreboot project.
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*
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* Copyright 2015 MediaTek Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <console/console.h>
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#include <device/i2c.h>
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#include <soc/da9212.h>
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enum {
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DA9212_SLAVE_ADDR = 0x68,
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};
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static void da9212_hw_init(uint8_t i2c_num, unsigned char variant_id)
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{
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int ret = 0;
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int buck_mode = DA9212_BUCK_MODE_AUTO;
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if (variant_id == DA9212_VARIANT_ID_AB)
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buck_mode = DA9212_BUCK_MODE_PWM;
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/* page select to 0 */
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ret |= i2c_write_field(i2c_num, DA9212_SLAVE_ADDR,
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DA9212_REG_PAGE_CON, DA9212_REG_PAGE0,
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DA9212_REG_PAGE_MASK, DA9212_REG_PAGE_SHIFT);
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ret |= i2c_write_field(i2c_num, DA9212_SLAVE_ADDR,
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DA9212_REG_BUCKA_CONT, DA9212_BUCK_GPI_GPIO1,
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DA9212_BUCK_GPI_MASK, DA9212_BUCK_GPI_SHIFT);
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ret |= i2c_write_field(i2c_num, DA9212_SLAVE_ADDR,
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DA9212_REG_BUCKB_CONT, DA9212_BUCK_GPI_OFF,
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DA9212_BUCK_GPI_OFF, DA9212_BUCK_GPI_SHIFT);
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ret |= i2c_write_field(i2c_num, DA9212_SLAVE_ADDR,
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DA9212_REG_BUCKA_CONT, DA9212_VBUCK_SEL_A,
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DA9212_VBUCK_SEL_MASK, DA9212_VBUCK_SEL_SHIFT);
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ret |= i2c_write_field(i2c_num, DA9212_SLAVE_ADDR,
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DA9212_REG_BUCKB_CONT, DA9212_VBUCK_SEL_A,
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DA9212_VBUCK_SEL_MASK, DA9212_VBUCK_SEL_SHIFT);
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ret |= i2c_write_field(i2c_num, DA9212_SLAVE_ADDR,
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DA9212_REG_BUCKA_CONF, buck_mode,
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DA9212_BUCK_MODE_MASK, DA9212_BUCK_MODE_SHIFT);
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ret |= i2c_write_field(i2c_num, DA9212_SLAVE_ADDR,
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DA9212_REG_BUCKB_CONF, buck_mode,
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DA9212_BUCK_MODE_MASK, DA9212_BUCK_MODE_SHIFT);
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if (ret)
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printk(BIOS_ERR, "ERROR: %s failed\n", __func__);
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}
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void da9212_probe(uint8_t i2c_num)
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{
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int ret = 0;
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unsigned char device_id = 0;
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unsigned char variant_id = 0;
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/* select to page 4, clear REVERT at first time */
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ret |= i2c_write_field(i2c_num, DA9212_SLAVE_ADDR,
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DA9212_REG_PAGE_CON, DA9212_REG_PAGE4,
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0xF, DA9212_REG_PAGE_SHIFT);
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ret |= i2c_read_field(i2c_num, DA9212_SLAVE_ADDR,
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DA9212_REG_DEVICE_ID, &device_id,
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0xFF, 0);
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ret |= i2c_read_field(i2c_num, DA9212_SLAVE_ADDR,
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DA9212_REG_VARIANT_ID, &variant_id,
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0xFF, 0);
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printk(BIOS_INFO, "%s: device ID = %#x, variant ID = %#x\n", __func__,
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device_id, variant_id);
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/* Check device ID is DA9212 */
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if (device_id != DA9212_ID || ret) {
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printk(BIOS_ERR, "ERROR: unknown DA9212 device_id\n");
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return;
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}
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da9212_hw_init(i2c_num, variant_id);
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}
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@ -0,0 +1,85 @@
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/*
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* This file is part of the coreboot project.
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*
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* Copyright 2015 MediaTek Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef __SOC_DA9212_H_
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#define __SOC_DA9212_H_
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void da9212_probe(uint8_t i2c_num);
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enum {
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/* Page selection */
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DA9212_REG_PAGE_CON = 0x0,
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/* Regulator Registers */
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DA9212_REG_BUCKA_CONT = 0x5D,
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DA9212_REG_BUCKB_CONT = 0x5E,
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DA9212_REG_BUCKA_CONF = 0xD1,
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DA9212_REG_BUCKB_CONF = 0xD2,
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};
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/* DA9212_REG_PAGE_CON (addr=0x0) */
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enum {
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DA9212_REG_PAGE_SHIFT = 0,
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DA9212_REG_PAGE_MASK = 0xf
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};
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enum {
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DA9212_REG_PAGE0 = 0,
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DA9212_REG_PAGE2 = 2,
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DA9212_REG_PAGE4 = 4,
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DA9212_PAGE_WRITE_MODE = 0x0,
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DA9212_REPEAT_WRITE_MODE = 0x40,
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DA9212_PAGE_REVERT = 0x80
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};
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/* DA9212_REG_BUCKA/B_CONT (addr=0x5D/0x5E) */
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enum {
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DA9212_BUCK_EN_SHIFT = 0,
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DA9212_BUCK_OFF = 0x0,
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DA9212_BUCK_ON = 0x1,
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DA9212_BUCK_GPI_SHIFT = 1,
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DA9212_BUCK_GPI_MASK = 0x3,
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DA9212_BUCK_GPI_OFF = 0x0,
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DA9212_BUCK_GPI_GPIO0 = 0x1,
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DA9212_BUCK_GPI_GPIO1 = 0x2,
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DA9212_BUCK_GPI_GPIO4 = 0x3,
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DA9212_VBUCK_SEL_SHIFT = 4,
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DA9212_VBUCK_SEL_MASK = 0x1,
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DA9212_VBUCK_SEL_A = 0x0,
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DA9212_VBUCK_SEL_B = 0x1,
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};
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/* DA9212_REG_BUCKA/B_CONF (addr=0xD1/0xD2) */
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enum {
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DA9212_BUCK_MODE_SHIFT = 0,
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DA9212_BUCK_MODE_MASK = 0x3,
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DA9212_BUCK_MODE_MANUAL = 0x0,
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DA9212_BUCK_MODE_PFM = 0x1,
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DA9212_BUCK_MODE_PWM = 0x2,
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DA9212_BUCK_MODE_AUTO = 0x3,
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};
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/* DA9212_REG_CONFIG_E (addr=0x147) */
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enum {
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/* DEVICE IDs */
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DA9212_REG_DEVICE_ID = 0x1,
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DA9212_ID = 0x22,
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DA9213_ID = 0x23,
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DA9212_REG_VARIANT_ID = 0x2,
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DA9212_VARIANT_ID_AB = 0x10,
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DA9212_VARIANT_ID_AC = 0x20
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};
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#endif
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