From f547fc9d579e894257cccfebec3a374e27e69e0c Mon Sep 17 00:00:00 2001 From: Shiji Yang Date: Tue, 12 Dec 2023 05:18:45 +0000 Subject: [PATCH] ramips: reset mt7620 ethernet phy via reset controller Use reset controller to reset mt7620 ethernet phy instead of directly writing system control registers. The reset line of "ephy" is 24, so the DTS resets properties have been updated to get the correct reset signal. Tested on HiWiFi HC5861. Signed-off-by: Shiji Yang --- target/linux/ramips/dts/mt7620a.dtsi | 4 ++-- target/linux/ramips/dts/mt7620n.dtsi | 4 ++-- .../drivers/net/ethernet/ralink/gsw_mt7620.c | 19 ++++++++++++++++++- .../drivers/net/ethernet/ralink/gsw_mt7620.h | 3 +++ .../drivers/net/ethernet/ralink/mtk_eth_soc.c | 16 ---------------- .../drivers/net/ethernet/ralink/mtk_eth_soc.h | 4 ---- 6 files changed, 25 insertions(+), 25 deletions(-) diff --git a/target/linux/ramips/dts/mt7620a.dtsi b/target/linux/ramips/dts/mt7620a.dtsi index a1dfa8c730..0fa503e7a2 100644 --- a/target/linux/ramips/dts/mt7620a.dtsi +++ b/target/linux/ramips/dts/mt7620a.dtsi @@ -490,8 +490,8 @@ compatible = "mediatek,mt7620-gsw"; reg = <0x10110000 0x8000>; - resets = <&sysc 23>; - reset-names = "esw"; + resets = <&sysc 24>; + reset-names = "ephy"; interrupt-parent = <&intc>; interrupts = <17>; diff --git a/target/linux/ramips/dts/mt7620n.dtsi b/target/linux/ramips/dts/mt7620n.dtsi index f4a5165704..4f07c6bc4b 100644 --- a/target/linux/ramips/dts/mt7620n.dtsi +++ b/target/linux/ramips/dts/mt7620n.dtsi @@ -317,8 +317,8 @@ compatible = "mediatek,mt7620-gsw"; reg = <0x10110000 0x8000>; - resets = <&sysc 23>; - reset-names = "esw"; + resets = <&sysc 24>; + reset-names = "ephy"; interrupt-parent = <&intc>; interrupts = <17>; diff --git a/target/linux/ramips/files/drivers/net/ethernet/ralink/gsw_mt7620.c b/target/linux/ramips/files/drivers/net/ethernet/ralink/gsw_mt7620.c index 84b6e305a4..dcaff04db1 100644 --- a/target/linux/ramips/files/drivers/net/ethernet/ralink/gsw_mt7620.c +++ b/target/linux/ramips/files/drivers/net/ethernet/ralink/gsw_mt7620.c @@ -61,6 +61,17 @@ static irqreturn_t gsw_interrupt_mt7620(int irq, void *_priv) return IRQ_HANDLED; } +static void gsw_reset_ephy(struct mt7620_gsw *gsw) +{ + if (!gsw->rst_ephy) + return; + + reset_control_assert(gsw->rst_ephy); + usleep_range(10, 20); + reset_control_deassert(gsw->rst_ephy); + usleep_range(10, 20); +} + static void mt7620_ephy_init(struct mt7620_gsw *gsw) { u32 i; @@ -79,7 +90,7 @@ static void mt7620_ephy_init(struct mt7620_gsw *gsw) mtk_switch_w32(gsw, mtk_switch_r32(gsw, GSW_REG_GPC1) | (gsw->ephy_base << 16), GSW_REG_GPC1); - fe_reset(MT7620A_RESET_EPHY); + gsw_reset_ephy(gsw); pr_info("gsw: ephy base address: %d\n", gsw->ephy_base); } @@ -263,6 +274,12 @@ static int mt7620_gsw_probe(struct platform_device *pdev) gsw->irq = platform_get_irq(pdev, 0); + gsw->rst_ephy = devm_reset_control_get_exclusive(&pdev->dev, "ephy"); + if (IS_ERR(gsw->rst_ephy)) { + dev_err(gsw->dev, "failed to get EPHY reset: %pe\n", gsw->rst_ephy); + gsw->rst_ephy = NULL; + } + platform_set_drvdata(pdev, gsw); return 0; diff --git a/target/linux/ramips/files/drivers/net/ethernet/ralink/gsw_mt7620.h b/target/linux/ramips/files/drivers/net/ethernet/ralink/gsw_mt7620.h index cb5d098e9c..12cab39b77 100644 --- a/target/linux/ramips/files/drivers/net/ethernet/ralink/gsw_mt7620.h +++ b/target/linux/ramips/files/drivers/net/ethernet/ralink/gsw_mt7620.h @@ -12,6 +12,8 @@ * Copyright (C) 2013-2015 Michael Lee */ +#include + #ifndef _RALINK_GSW_MT7620_H__ #define _RALINK_GSW_MT7620_H__ @@ -90,6 +92,7 @@ enum { struct mt7620_gsw { struct device *dev; + struct reset_control *rst_ephy; void __iomem *base; int irq; bool ephy_disable; diff --git a/target/linux/ramips/files/drivers/net/ethernet/ralink/mtk_eth_soc.c b/target/linux/ramips/files/drivers/net/ethernet/ralink/mtk_eth_soc.c index 9c11e9cc89..c741c85f4a 100644 --- a/target/linux/ramips/files/drivers/net/ethernet/ralink/mtk_eth_soc.c +++ b/target/linux/ramips/files/drivers/net/ethernet/ralink/mtk_eth_soc.c @@ -61,8 +61,6 @@ #define NEXT_TX_DESP_IDX(X) (((X) + 1) & (ring->tx_ring_size - 1)) #define NEXT_RX_DESP_IDX(X) (((X) + 1) & (ring->rx_ring_size - 1)) -#define SYSC_REG_RSTCTRL 0x34 - static int fe_msg_level = -1; module_param_named(msg_level, fe_msg_level, int, 0); MODULE_PARM_DESC(msg_level, "Message level (-1=defaults,0=none,...,16=all)"); @@ -127,20 +125,6 @@ void fe_m32(struct fe_priv *eth, u32 clear, u32 set, unsigned reg) spin_unlock(ð->page_lock); } -void fe_reset(u32 reset_bits) -{ - u32 t; - - t = rt_sysc_r32(SYSC_REG_RSTCTRL); - t |= reset_bits; - rt_sysc_w32(t, SYSC_REG_RSTCTRL); - usleep_range(10, 20); - - t &= ~reset_bits; - rt_sysc_w32(t, SYSC_REG_RSTCTRL); - usleep_range(10, 20); -} - static void fe_reset_fe(struct fe_priv *priv) { if (!priv->resets) diff --git a/target/linux/ramips/files/drivers/net/ethernet/ralink/mtk_eth_soc.h b/target/linux/ramips/files/drivers/net/ethernet/ralink/mtk_eth_soc.h index 619319d18e..7b291ff43e 100644 --- a/target/linux/ramips/files/drivers/net/ethernet/ralink/mtk_eth_soc.h +++ b/target/linux/ramips/files/drivers/net/ethernet/ralink/mtk_eth_soc.h @@ -157,8 +157,6 @@ enum fe_work_flag { #define MT7620A_FE_GDMA1_MAC_ADRL (MT7620A_GDMA_OFFSET + 0x0C) #define MT7620A_FE_GDMA1_MAC_ADRH (MT7620A_GDMA_OFFSET + 0x10) -#define MT7620A_RESET_EPHY BIT(24) - #define RT5350_TX_BASE_PTR0 (RT5350_PDMA_OFFSET + 0x00) #define RT5350_TX_MAX_CNT0 (RT5350_PDMA_OFFSET + 0x04) #define RT5350_TX_CTX_IDX0 (RT5350_PDMA_OFFSET + 0x08) @@ -513,8 +511,6 @@ void fe_fwd_config(struct fe_priv *priv); void fe_reg_w32(u32 val, enum fe_reg reg); u32 fe_reg_r32(enum fe_reg reg); -void fe_reset(u32 reset_bits); - static inline void *priv_netdev(struct fe_priv *priv) { return (char *)priv - ALIGN(sizeof(struct net_device), NETDEV_ALIGN); -- 2.30.2