25c672a27f
* Linux: Update kernel 6.1.12 * Update generic_raw_uart to build with Linux 6.1 * Update Realtek rtl8821cu/rtl88x2bu to build with Linux 6.1 * Bump buildroot * buildroot 43f82f01b9...90aa1a6daa (1): > rtl8812au-aircrack-ng: bump to latest rev d98018 * Fix eq3_char_loop to build with Linux 6.1 * rtl8821cu: make sure -Werror is disabled for the kernel build * generic_raw_uart: make sure -Werror is disabled for the kernel build
95 lines
2.9 KiB
Diff
95 lines
2.9 KiB
Diff
From e7d59e0444170873e945a0675ed1565a65c99e17 Mon Sep 17 00:00:00 2001
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Message-Id: <e7d59e0444170873e945a0675ed1565a65c99e17.1676489173.git.stefan@agner.ch>
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From: memeka <mihailescu2m@gmail.com>
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Date: Fri, 18 Jan 2019 14:36:21 +1030
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Subject: [PATCH] ODROID-XU4: regulator: s2mps11: add ethernet power reset in
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shutdown function
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Ethernet device cannot be detected on warm boot sometimes. This patch is
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to add the power reset routines for ethernet device using PMIC. Then
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ethernet device can be reset hardware-wise.
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Change-Id: Iffbe2966da7e4679f63b91ab79241167391792df
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Signed-off-by: Brian Kim <brian.kim@hardkernel.com>
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Signed-off-by: Marian Mihailescu <mihailescu2m@gmail.com>
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---
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drivers/regulator/s2mps11.c | 55 +++++++++++++++++++++++++++++++++++++
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1 file changed, 55 insertions(+)
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diff --git a/drivers/regulator/s2mps11.c b/drivers/regulator/s2mps11.c
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index ebc67e3ddd4f..51f128076db9 100644
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--- a/drivers/regulator/s2mps11.c
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+++ b/drivers/regulator/s2mps11.c
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@@ -1117,6 +1117,57 @@ static const struct regulator_desc s2mpu02_regulators[] = {
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regulator_desc_s2mpu02_buck7(7),
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};
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+static int s2mps11_pmic_ethonoff(struct platform_device *pdev, bool onoff)
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+{
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+ struct sec_pmic_dev *iodev = dev_get_drvdata(pdev->dev.parent);
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+ unsigned int reg_val = 0;
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+ int ret = 0;
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+
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+ ret = regmap_read(iodev->regmap_pmic, S2MPS11_REG_L15CTRL, ®_val);
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+ if (ret) {
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+ dev_err(&pdev->dev, "failed to read S2MPS11_REG_L15CTRL value\n");
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+ return ret;
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+ }
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+
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+ ret = regmap_read(iodev->regmap_pmic, S2MPS11_REG_L17CTRL, ®_val);
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+ if (ret) {
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+ dev_err(&pdev->dev, "failed to read S2MPS11_REG_L17CTRL value\n");
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+ return ret;
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+ }
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+
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+ if (onoff) {
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+ /* ETH VDD0 ON */
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+ ret = regmap_update_bits(iodev->regmap_pmic, S2MPS11_REG_L15CTRL, 0xFF, 0x72);
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+ if (ret) {
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+ dev_err(&pdev->dev, "cannot update S2MPS11 LDO CTRL15 register\n");
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+ return ret;
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+ }
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+
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+ /* ETH VDD1 ON */
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+ ret = regmap_update_bits(iodev->regmap_pmic, S2MPS11_REG_L17CTRL, 0xFF, 0x72);
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+ if (ret) {
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+ dev_err(&pdev->dev, "cannot update S2MPS11 LDO CTRL17 register\n");
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+ return ret;
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+ }
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+ } else {
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+ /* ETH VDD0 OFF */
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+ ret = regmap_update_bits(iodev->regmap_pmic, S2MPS11_REG_L15CTRL, 0x3F, 0x00);
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+ if (ret) {
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+ dev_err(&pdev->dev, "cannot update S2MPS11 LDO CTRL15 register\n");
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+ return ret;
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+ }
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+
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+ /* ETH VDD1 OFF */
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+ ret = regmap_update_bits(iodev->regmap_pmic, S2MPS11_REG_L17CTRL, 0x3F, 0x00);
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+ if (ret) {
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+ dev_err(&pdev->dev, "cannot update S2MPS11 LDO CTRL17 register\n");
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+ return ret;
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+ }
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+ }
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+
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+ return ret;
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+}
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+
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static int s2mps11_pmic_probe(struct platform_device *pdev)
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{
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struct sec_pmic_dev *iodev = dev_get_drvdata(pdev->dev.parent);
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@@ -1219,6 +1270,10 @@ static int s2mps11_pmic_probe(struct platform_device *pdev)
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}
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}
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+ dev_info(&pdev->dev, "Resetting Ethernet\n");
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+ s2mps11_pmic_ethonoff(pdev, false);
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+ mdelay(10);
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+ s2mps11_pmic_ethonoff(pdev, true);
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out:
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kfree(rdata);
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--
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2.39.1
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