diff options
Diffstat (limited to 'target/linux/lantiq/patches-4.14/0025-MIPS-lantiq-gphy-Remove-reboot-remove-reset-asserts.patch')
| -rw-r--r-- | target/linux/lantiq/patches-4.14/0025-MIPS-lantiq-gphy-Remove-reboot-remove-reset-asserts.patch | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/target/linux/lantiq/patches-4.14/0025-MIPS-lantiq-gphy-Remove-reboot-remove-reset-asserts.patch b/target/linux/lantiq/patches-4.14/0025-MIPS-lantiq-gphy-Remove-reboot-remove-reset-asserts.patch new file mode 100644 index 0000000000..6efa6f13d9 --- /dev/null +++ b/target/linux/lantiq/patches-4.14/0025-MIPS-lantiq-gphy-Remove-reboot-remove-reset-asserts.patch @@ -0,0 +1,86 @@ +From ae14aba7fc748b2da282b59a2f516a311ed1f6eb Mon Sep 17 00:00:00 2001 +From: Mathias Kresin <dev@kresin.me> +Date: Tue, 27 Mar 2018 23:15:07 +0200 +Subject: [PATCH] MIPS: lantiq: gphy: Remove reboot/remove reset asserts + +While doing a global software reset, these bits are not cleared and let +some bootloader fail to initialise the GPHYs. The bootloader don't expect +these bits to be set, as they aren't during power on. + +The asserts were a workaround for a wrong syscon-reboot mask. With a mask +set which includes the GPHY resets of the first reset register, the +resets of the second reset register arn't required any more. + +Signed-off-by: Mathias Kresin <dev@kresin.me> +--- + drivers/soc/lantiq/gphy.c | 34 ---------------------------------- + 1 file changed, 34 deletions(-) + +--- a/drivers/soc/lantiq/gphy.c ++++ b/drivers/soc/lantiq/gphy.c +@@ -30,7 +30,6 @@ struct xway_gphy_priv { + struct clk *gphy_clk_gate; + struct reset_control *gphy_reset; + struct reset_control *gphy_reset2; +- struct notifier_block gphy_reboot_nb; + void __iomem *membase; + char *fw_name; + }; +@@ -65,24 +64,6 @@ static const struct of_device_id xway_gp + }; + MODULE_DEVICE_TABLE(of, xway_gphy_match); + +-static struct xway_gphy_priv *to_xway_gphy_priv(struct notifier_block *nb) +-{ +- return container_of(nb, struct xway_gphy_priv, gphy_reboot_nb); +-} +- +-static int xway_gphy_reboot_notify(struct notifier_block *reboot_nb, +- unsigned long code, void *unused) +-{ +- struct xway_gphy_priv *priv = to_xway_gphy_priv(reboot_nb); +- +- if (priv) { +- reset_control_assert(priv->gphy_reset); +- reset_control_assert(priv->gphy_reset2); +- } +- +- return NOTIFY_DONE; +-} +- + static int xway_gphy_load(struct device *dev, struct xway_gphy_priv *priv, + dma_addr_t *dev_addr) + { +@@ -216,14 +197,6 @@ static int xway_gphy_probe(struct platfo + reset_control_deassert(priv->gphy_reset); + reset_control_deassert(priv->gphy_reset2); + +- /* assert the gphy reset because it can hang after a reboot: */ +- priv->gphy_reboot_nb.notifier_call = xway_gphy_reboot_notify; +- priv->gphy_reboot_nb.priority = -1; +- +- ret = register_reboot_notifier(&priv->gphy_reboot_nb); +- if (ret) +- dev_warn(dev, "Failed to register reboot notifier\n"); +- + platform_set_drvdata(pdev, priv); + + return ret; +@@ -235,17 +208,10 @@ static int xway_gphy_remove(struct platf + struct xway_gphy_priv *priv = platform_get_drvdata(pdev); + int ret; + +- reset_control_assert(priv->gphy_reset); +- reset_control_assert(priv->gphy_reset2); +- + iowrite32be(0, priv->membase); + + clk_disable_unprepare(priv->gphy_clk_gate); + +- ret = unregister_reboot_notifier(&priv->gphy_reboot_nb); +- if (ret) +- dev_warn(dev, "Failed to unregister reboot notifier\n"); +- + return 0; + } + |