openwrt/target/linux/ar71xx/patches-4.9/902-at803x-add-reset-gpio-pdata.patch
Stijn Segers 9e1530b2a3 kernel: bump 4.9 to 4.9.117 for 18.06
* Refreshed patches.
* Removed patches:
  - target/linux/ar71xx/patches-4.9/103-MIPS-ath79-fix-register-address-in-ath79_ddr_wb_flus.patch superseded by upstream
  - target/linux/ar71xx/patches-4.9/403-mtd_fix_cfi_cmdset_0002_status_check.patch superseded by upstream
  - target/linux/brcm63xx/patches-4.9/001-4.11-01-mtd-m25p80-consider-max-message-size-in-m25p80_read.patch accepted upstream
  - target/linux/brcm63xx/patches-4.9/001-4.15-08-bcm63xx_enet-correct-clock-usage.patch accepted upstream
  - target/linux/brcm63xx/patches-4.9/001-4.15-09-bcm63xx_enet-do-not-write-to-random-DMA-channel-on-B.patch accepted upstream
  - target/linux/generic/pending-4.9/900-gen_stats-fix-netlink-stats-padding.patch

* New backported patch to address ext4 breakage, introduced in 4.9.112:
  - backport-4.9/500-ext4-fix-check-to-prevent-initializing-reserved-inod.patch

Also add ARM64_SSBD symbol to ARM64 targets still running kernel 4.9

Thanks to Koen Vandeputte for pointing out the need to add the ARM64_SSBD symbol, and the ext4 patch.

Compile-tested on: ar71xx
Run-tested on: ar71xx

Signed-off-by: Stijn Segers <foss@volatilesystems.org>
2018-08-06 07:30:32 +02:00

69 lines
2.1 KiB
Diff

Add support for configuring AT803x GPIO reset via platform data.
This is necessary, because ath79 is not converted to device tree yet.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
--- a/include/linux/platform_data/phy-at803x.h
+++ b/include/linux/platform_data/phy-at803x.h
@@ -6,6 +6,8 @@ struct at803x_platform_data {
int enable_rgmii_tx_delay:1;
int enable_rgmii_rx_delay:1;
int fixup_rgmii_tx_delay:1;
+ int has_reset_gpio:1;
+ int reset_gpio;
};
#endif /* _PHY_AT803X_PDATA_H */
--- a/drivers/net/phy/at803x.c
+++ b/drivers/net/phy/at803x.c
@@ -261,6 +261,7 @@ static int at803x_resume(struct phy_devi
static int at803x_probe(struct phy_device *phydev)
{
+ struct at803x_platform_data *pdata;
struct device *dev = &phydev->mdio.dev;
struct at803x_priv *priv;
struct gpio_desc *gpiod_reset;
@@ -273,6 +274,12 @@ static int at803x_probe(struct phy_devic
phydev->drv->phy_id != ATH8032_PHY_ID)
goto does_not_require_reset_workaround;
+ pdata = dev_get_platdata(dev);
+ if (pdata && pdata->has_reset_gpio) {
+ devm_gpio_request(dev, pdata->reset_gpio, "reset");
+ gpio_direction_output(pdata->reset_gpio, 1);
+ }
+
gpiod_reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW);
if (IS_ERR(gpiod_reset))
return PTR_ERR(gpiod_reset);
@@ -404,15 +411,23 @@ static void at803x_link_change_notify(st
* cannot recover from by software.
*/
if (phydev->state == PHY_NOLINK) {
- if (priv->gpiod_reset && !priv->phy_reset) {
+ if ((priv->gpiod_reset || (pdata && pdata->has_reset_gpio)) &&
+ !priv->phy_reset) {
struct at803x_context context;
at803x_context_save(phydev, &context);
- gpiod_set_value(priv->gpiod_reset, 1);
- msleep(1);
- gpiod_set_value(priv->gpiod_reset, 0);
- msleep(1);
+ if (pdata && pdata->has_reset_gpio) {
+ gpio_set_value_cansleep(pdata->reset_gpio, 0);
+ msleep(1);
+ gpio_set_value_cansleep(pdata->reset_gpio, 1);
+ msleep(1);
+ } else {
+ gpiod_set_value(priv->gpiod_reset, 1);
+ msleep(1);
+ gpiod_set_value(priv->gpiod_reset, 0);
+ msleep(1);
+ }
at803x_context_restore(phydev, &context);