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64 lines
2.0 KiB
Diff
64 lines
2.0 KiB
Diff
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From 22885637d0976473b04d4bae191fcf88e28b3df5 Mon Sep 17 00:00:00 2001
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From: Emil Renner Berthing <kernel@esmil.dk>
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Date: Wed, 29 Sep 2021 20:50:22 +0200
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Subject: [PATCH 1000/1024] net: stmmac: dwmac-starfive: Add JH7100 support
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This adds support for setting the phy interface and delay chains on the
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StarFive JH7100 SoC.
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Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>
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---
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.../net/ethernet/stmicro/stmmac/dwmac-starfive.c | 13 +++++++++++++
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1 file changed, 13 insertions(+)
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--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-starfive.c
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+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-starfive.c
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@@ -17,6 +17,10 @@
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#define STARFIVE_DWMAC_PHY_INFT_RMII 0x4
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#define STARFIVE_DWMAC_PHY_INFT_FIELD 0x7U
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+#define JH7100_SYSMAIN_REGISTER28 0x70
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+/* The value below is not a typo, just really bad naming by StarFive ¯\_(ツ)_/¯ */
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+#define JH7100_SYSMAIN_REGISTER49 0xc8
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+
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struct starfive_dwmac {
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struct device *dev;
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struct clk *clk_tx;
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@@ -56,6 +60,7 @@ static int starfive_dwmac_set_mode(struc
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struct regmap *regmap;
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unsigned int args[2];
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unsigned int mode;
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+ u32 gtxclk_dlychain;
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int err;
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switch (plat_dat->interface) {
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@@ -65,6 +70,7 @@ static int starfive_dwmac_set_mode(struc
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case PHY_INTERFACE_MODE_RGMII:
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case PHY_INTERFACE_MODE_RGMII_ID:
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+ case PHY_INTERFACE_MODE_RGMII_TXID:
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mode = STARFIVE_DWMAC_PHY_INFT_RGMII;
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break;
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@@ -87,6 +93,12 @@ static int starfive_dwmac_set_mode(struc
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if (err)
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return dev_err_probe(dwmac->dev, err, "error setting phy mode\n");
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+ if (!of_property_read_u32(dwmac->dev->of_node, "starfive,gtxclk-dlychain", >xclk_dlychain)) {
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+ err = regmap_write(regmap, JH7100_SYSMAIN_REGISTER49, gtxclk_dlychain);
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+ if (err)
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+ return dev_err_probe(dwmac->dev, err, "error selecting gtxclk delay chain\n");
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+ }
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+
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return 0;
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}
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@@ -149,6 +161,7 @@ static int starfive_dwmac_probe(struct p
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}
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static const struct of_device_id starfive_dwmac_match[] = {
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+ { .compatible = "starfive,jh7100-dwmac" },
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{ .compatible = "starfive,jh7110-dwmac" },
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{ /* sentinel */ }
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};
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