mirror of
https://source.denx.de/u-boot/u-boot.git
synced 2026-05-05 20:56:12 +02:00
Merge patch series "Add support for two RTCs"
Michael Walle <mwalle@kernel.org> says: I'll soon post support for the Kontron SMARC-sAM67 u-boot support. I'm still waiting for the linux device trees to be merged (in -next right now) and then to be synced to the u-boot tree. That board features two different RTCs and this will already support for these. Link: https://lore.kernel.org/r/20251117103315.2212686-1-mwalle@kernel.org
This commit is contained in:
Tom Rini
commit
7af532a8ef
@ -161,8 +161,16 @@ config RTC_MAX313XX
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- Temperature sensor
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- CLKOUT generation
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config RTC_PCF85063
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bool "Enable PCF85063 driver"
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depends on DM_I2C
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depends on DM_RTC
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help
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If you say yes here you get support for the NXP PCF85063 RTC
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and compatible chips.
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config RTC_PCF8563
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tristate "Philips PCF8563"
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bool "Philips PCF8563"
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help
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If you say yes here you get support for the Philips PCF8563 RTC
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and compatible chips.
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@ -186,6 +194,13 @@ config RTC_RV3029
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This driver supports reading and writing the RTC/calendar and the
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battery-baced SRAM section.
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config RTC_RV3032
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bool "Enable RV3032 driver"
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depends on DM_RTC
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help
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If you say yes here you get support for the Micro Crystal RV3032
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RTC.
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config RTC_RV8803
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bool "Enable RV8803 driver"
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depends on DM_RTC
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@ -27,12 +27,14 @@ obj-$(CONFIG_RTC_MC146818) += mc146818.o
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obj-$(CONFIG_MCFRTC) += mcfrtc.o
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obj-$(CONFIG_RTC_MV) += mvrtc.o
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obj-$(CONFIG_RTC_MXS) += mxsrtc.o
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obj-$(CONFIG_RTC_PCF85063) += pcf85063.o
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obj-$(CONFIG_RTC_PCF8563) += pcf8563.o
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obj-$(CONFIG_RTC_PCF2127) += pcf2127.o
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obj-$(CONFIG_RTC_PL031) += pl031.o
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obj-$(CONFIG_RTC_PT7C4338) += pt7c4338.o
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obj-$(CONFIG_RTC_RV3028) += rv3028.o
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obj-$(CONFIG_RTC_RV3029) += rv3029.o
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obj-$(CONFIG_RTC_RV3032) += rv3032.o
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obj-$(CONFIG_RTC_RV8803) += rv8803.o
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obj-$(CONFIG_RTC_RX8025) += rx8025.o
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obj-$(CONFIG_RTC_RX8010SJ) += rx8010sj.o
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107
drivers/rtc/pcf85063.c
Normal file
107
drivers/rtc/pcf85063.c
Normal file
@ -0,0 +1,107 @@
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// SPDX-License-Identifier: GPL-2.0-only
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/*
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* PCF85063 and compatible I2C RTC driver
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*
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* Copyright (c) 2025 Kontron Europe GmbH.
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*/
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#include <dm.h>
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#include <i2c.h>
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#include <rtc.h>
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#include <dm/device_compat.h>
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#define PCF85063_REG_CTRL1 0x00 /* status */
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#define PCF85063_REG_CTRL1_SR 0x58
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#define PCF85063_REG_SC 0x04 /* datetime */
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#define PCF85063_REG_SC_OS 0x80
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static int pcf85063_get_time(struct udevice *dev, struct rtc_time *tm)
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{
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u8 regs[7];
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int ret;
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ret = dm_i2c_read(dev, PCF85063_REG_SC, regs, sizeof(regs));
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if (ret)
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return ret;
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if (regs[0] & PCF85063_REG_SC_OS) {
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dev_err(dev, "Power loss detected, Invalid time\n");
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return -EINVAL;
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}
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tm->tm_sec = bcd2bin(regs[0] & 0x7f);
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tm->tm_min = bcd2bin(regs[1] & 0x7f);
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tm->tm_hour = bcd2bin(regs[2] & 0x3f);
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tm->tm_mday = bcd2bin(regs[3] & 0x3f);
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tm->tm_wday = regs[4] & 0x07;
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tm->tm_mon = bcd2bin(regs[5] & 0x1f) - 1;
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tm->tm_year = bcd2bin(regs[6]) + 2000;
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return 0;
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}
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static int pcf85063_set_time(struct udevice *dev, const struct rtc_time *tm)
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{
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u8 regs[7];
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if (tm->tm_year < 2000 || tm->tm_year > 2099) {
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dev_err(dev, "Year must be between 2000 and 2099.\n");
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return -EINVAL;
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}
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regs[0] = bin2bcd(tm->tm_sec);
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regs[1] = bin2bcd(tm->tm_min);
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regs[2] = bin2bcd(tm->tm_hour);
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regs[3] = bin2bcd(tm->tm_mday);
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regs[4] = tm->tm_wday;
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regs[5] = bin2bcd(tm->tm_mon + 1);
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regs[6] = bin2bcd(tm->tm_year % 100);
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return dm_i2c_write(dev, PCF85063_REG_SC, regs, sizeof(regs));
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}
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static int pcf85063_reset(struct udevice *dev)
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{
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return dm_i2c_reg_write(dev, PCF85063_REG_CTRL1, PCF85063_REG_CTRL1_SR);
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}
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static int pcf85063_read(struct udevice *dev, unsigned int offset, u8 *buf,
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unsigned int len)
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{
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return dm_i2c_read(dev, offset, buf, len);
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}
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static int pcf85063_write(struct udevice *dev, unsigned int offset,
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const u8 *buf, unsigned int len)
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{
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return dm_i2c_write(dev, offset, buf, len);
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}
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static const struct rtc_ops pcf85063_rtc_ops = {
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.get = pcf85063_get_time,
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.set = pcf85063_set_time,
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.reset = pcf85063_reset,
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.read = pcf85063_read,
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.write = pcf85063_write,
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};
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static int pcf85063_probe(struct udevice *dev)
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{
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i2c_set_chip_flags(dev, DM_I2C_CHIP_RD_ADDRESS | DM_I2C_CHIP_WR_ADDRESS);
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return 0;
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}
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static const struct udevice_id pcf85063_of_id[] = {
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{ .compatible = "microcrystal,rv8263" },
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{ }
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};
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U_BOOT_DRIVER(rtc_pcf85063) = {
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.name = "rtc-pcf85063",
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.id = UCLASS_RTC,
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.probe = pcf85063_probe,
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.of_match = pcf85063_of_id,
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.ops = &pcf85063_rtc_ops,
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};
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121
drivers/rtc/rv3032.c
Normal file
121
drivers/rtc/rv3032.c
Normal file
@ -0,0 +1,121 @@
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// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Micro Crystal RV3032 I2C RTC driver
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*
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* Copyright (c) 2025 Kontron Europe GmbH.
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*/
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#include <dm.h>
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#include <i2c.h>
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#include <rtc.h>
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#include <dm/device_compat.h>
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#define RV3032_REG_SEC 0x01
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#define RV3032_REG_STATUS 0x0d
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#define RV3032_REG_STATUS_VLF BIT(0)
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#define RV3032_REG_STATUS_PORF BIT(1)
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static int rv3032_get_time(struct udevice *dev, struct rtc_time *tm)
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{
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int ret, status;
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u8 regs[7];
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status = dm_i2c_reg_read(dev, RV3032_REG_STATUS);
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if (status < 0)
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return status;
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if (status & (RV3032_REG_STATUS_PORF | RV3032_REG_STATUS_VLF)) {
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dev_err(dev, "Power loss detected, Invalid time\n");
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return -EINVAL;
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}
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ret = dm_i2c_read(dev, RV3032_REG_SEC, regs, sizeof(regs));
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if (ret)
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return ret;
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tm->tm_sec = bcd2bin(regs[0] & 0x7f);
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tm->tm_min = bcd2bin(regs[1] & 0x7f);
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tm->tm_hour = bcd2bin(regs[2] & 0x3f);
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tm->tm_mday = bcd2bin(regs[3] & 0x3f);
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tm->tm_wday = regs[4] & 0x07;
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tm->tm_mon = bcd2bin(regs[5] & 0x1f) - 1;
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tm->tm_year = bcd2bin(regs[6]) + 2000;
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return 0;
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}
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static int rv3032_set_time(struct udevice *dev, const struct rtc_time *tm)
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{
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u8 regs[7];
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int ret;
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if (tm->tm_year < 2000 || tm->tm_year > 2099) {
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dev_err(dev, "Year must be between 2000 and 2099.\n");
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return -EINVAL;
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}
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regs[0] = bin2bcd(tm->tm_sec);
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regs[1] = bin2bcd(tm->tm_min);
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regs[2] = bin2bcd(tm->tm_hour);
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regs[3] = bin2bcd(tm->tm_mday);
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regs[4] = tm->tm_wday;
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regs[5] = bin2bcd(tm->tm_mon + 1);
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regs[6] = bin2bcd(tm->tm_year % 100);
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ret = dm_i2c_write(dev, RV3032_REG_SEC, regs, sizeof(regs));
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if (ret)
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return ret;
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return dm_i2c_reg_clrset(dev, RV3032_REG_STATUS,
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RV3032_REG_STATUS_PORF | RV3032_REG_STATUS_VLF,
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0);
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}
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static int rv3032_read(struct udevice *dev, unsigned int offset, u8 *buf,
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unsigned int len)
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{
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return dm_i2c_read(dev, offset, buf, len);
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}
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static int rv3032_write(struct udevice *dev, unsigned int offset,
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const u8 *buf, unsigned int len)
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{
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return dm_i2c_write(dev, offset, buf, len);
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}
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static int rv3032_reset(struct udevice *dev)
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{
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/*
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* There is no reset, but the "date reset" command needs this op to
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* actually set the default time
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*/
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return 0;
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}
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static const struct rtc_ops rv3032_rtc_ops = {
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.get = rv3032_get_time,
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.set = rv3032_set_time,
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.read = rv3032_read,
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.write = rv3032_write,
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.reset = rv3032_reset,
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};
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static int rv3032_probe(struct udevice *dev)
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{
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i2c_set_chip_flags(dev, DM_I2C_CHIP_RD_ADDRESS | DM_I2C_CHIP_WR_ADDRESS);
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return 0;
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}
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static const struct udevice_id rv3032_of_id[] = {
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{ .compatible = "microcrystal,rv3032" },
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{ }
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};
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U_BOOT_DRIVER(rtc_rv3032) = {
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.name = "rtc-rv3032",
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.id = UCLASS_RTC,
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.probe = rv3032_probe,
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.of_match = rv3032_of_id,
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.ops = &rv3032_rtc_ops,
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};
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