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50 lines
1.4 KiB
Diff
50 lines
1.4 KiB
Diff
From d91c466ec19e5ced30631cec703164c79525b986 Mon Sep 17 00:00:00 2001
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From: Robert Marko <robert.marko@sartura.hr>
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Date: Sun, 27 Dec 2020 18:55:56 +0100
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Subject: [PATCH] net: mdio-ipq4019: add clock handling
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Newer SoC-s like IPQ807x and IPQ60xx use the same MDIO controller,
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but have separate MDIO clocks that need to be handled.
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So lets add support for doing that.
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Signed-off-by: Robert Marko <robert.marko@sartura.hr>
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---
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drivers/net/mdio/mdio-ipq4019.c | 12 ++++++++++++
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1 file changed, 12 insertions(+)
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--- a/drivers/net/mdio/mdio-ipq4019.c
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+++ b/drivers/net/mdio/mdio-ipq4019.c
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@@ -2,6 +2,7 @@
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/* Copyright (c) 2015, The Linux Foundation. All rights reserved. */
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/* Copyright (c) 2020 Sartura Ltd. */
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+#include <linux/clk.h>
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#include <linux/delay.h>
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#include <linux/io.h>
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#include <linux/iopoll.h>
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@@ -33,6 +34,7 @@
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struct ipq4019_mdio_data {
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void __iomem *membase;
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+ struct clk *clk;
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};
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static int ipq4019_mdio_wait_busy(struct mii_bus *bus)
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@@ -187,6 +189,16 @@ static int ipq4019_mdio_probe(struct pla
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if (IS_ERR(priv->membase))
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return PTR_ERR(priv->membase);
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+ priv->clk = devm_clk_get_optional(&pdev->dev, "mdio_ahb");
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+ if (IS_ERR(priv->clk)) {
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+ dev_err(&pdev->dev, "Failed getting clock!\n");
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+ return PTR_ERR(priv->clk);
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+ }
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+
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+ ret = clk_prepare_enable(priv->clk);
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+ if (ret)
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+ return ret;
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+
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bus->name = "ipq4019_mdio";
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bus->read = ipq4019_mdio_read;
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bus->write = ipq4019_mdio_write;
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