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regulator: s2mps11: odroidxu3: add ethernet power reset in shutdown

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Ethernet device cannot be detected on warm boot sometimes. This patch is
to add the power reset routines for ethernet device using PMIC. Then
ethernet device can be reset hardware-wise.

Change-Id: Iffbe2966da7e4679f63b91ab79241167391792df
Signed-off-by: Brian Kim <brian.kim@hardkernel.com>
This commit is contained in:
Brian Kim
2017-01-03 16:05:54 +09:00
parent bcfc9487c3
commit a86d8b187b
1 changed files with 55 additions and 0 deletions
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55
drivers/regulator/s2mps11.c
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@@ -1091,6 +1091,57 @@ static const struct regulator_desc s2mpu02_regulators[] = {
regulator_desc_s2mpu02_buck7(7),
};
static int s2mps11_pmic_ethonoff(struct platform_device *pdev, bool onoff)
{
struct sec_pmic_dev *iodev = dev_get_drvdata(pdev->dev.parent);
unsigned int reg_val = 0;
int ret = 0;
ret = regmap_read(iodev->regmap_pmic, S2MPS11_REG_L15CTRL, &reg_val);
if (ret) {
dev_err(&pdev->dev, "failed to read S2MPS11_REG_L15CTRL value\n");
return ret;
}
ret = regmap_read(iodev->regmap_pmic, S2MPS11_REG_L17CTRL, &reg_val);
if (ret) {
dev_err(&pdev->dev, "failed to read S2MPS11_REG_L17CTRL value\n");
return ret;
}
if (onoff) {
/* ETH VDD0 ON */
ret = regmap_update_bits(iodev->regmap_pmic, S2MPS11_REG_L15CTRL, 0xFF, 0x72);
if (ret) {
dev_err(&pdev->dev, "cannot update S2MPS11 LDO CTRL15 register\n");
return ret;
}
/* ETH VDD1 ON */
ret = regmap_update_bits(iodev->regmap_pmic, S2MPS11_REG_L17CTRL, 0xFF, 0x72);
if (ret) {
dev_err(&pdev->dev, "cannot update S2MPS11 LDO CTRL17 register\n");
return ret;
}
} else {
/* ETH VDD0 OFF */
ret = regmap_update_bits(iodev->regmap_pmic, S2MPS11_REG_L15CTRL, 0x3F, 0x00);
if (ret) {
dev_err(&pdev->dev, "cannot update S2MPS11 LDO CTRL15 register\n");
return ret;
}
/* ETH VDD1 OFF */
ret = regmap_update_bits(iodev->regmap_pmic, S2MPS11_REG_L17CTRL, 0x3F, 0x00);
if (ret) {
dev_err(&pdev->dev, "cannot update S2MPS11 LDO CTRL17 register\n");
return ret;
}
}
return ret;
}
static int s2mps11_pmic_probe(struct platform_device *pdev)
{
struct sec_pmic_dev *iodev = dev_get_drvdata(pdev->dev.parent);
@@ -1267,6 +1318,8 @@ static void s2mps11_pmic_shutdown(struct platform_device *pdev)
"could not update S2MPS11_REG_L19CTRL Error!!\n");
}
s2mps11_pmic_ethonoff(pdev, false);
mdelay(10);
if (regmap_update_bits(iodev->regmap_pmic,
@@ -1280,6 +1333,8 @@ static void s2mps11_pmic_shutdown(struct platform_device *pdev)
dev_crit(&pdev->dev,
"could not update S2MPS11_REG_L13CTRL Error!!\n");
}
s2mps11_pmic_ethonoff(pdev, true);
}
static const struct platform_device_id s2mps11_pmic_id[] = {