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