From: Biao Huang <biao.huang@mediatek.com>
To: Andrew Lunn <andrew@lunn.ch>,
AngeloGioacchino Del Regno
<angelogioacchino.delregno@collabora.com>,
Rob Herring <robh+dt@kernel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
Matthias Brugger <matthias.bgg@gmail.com>
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>,
Alexandre Torgue <alexandre.torgue@foss.st.com>,
Jose Abreu <joabreu@synopsys.com>,
"David S . Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
"Jakub Kicinski" <kuba@kernel.org>,
Paolo Abeni <pabeni@redhat.com>,
Maxime Coquelin <mcoquelin.stm32@gmail.com>,
Richard Cochran <richardcochran@gmail.com>,
<devicetree@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-mediatek@lists.infradead.org>,
<linux-kernel@vger.kernel.org>,
"Biao Huang" <biao.huang@mediatek.com>,
<macpaul.lin@mediatek.com>
Subject: [PATCH v6 1/2] stmmac: dwmac-mediatek: remove the dwmac_fix_mac_speed
Date: Wed, 28 Dec 2022 14:33:29 +0800 [thread overview]
Message-ID: <20221228063331.10756-2-biao.huang@mediatek.com> (raw)
In-Reply-To: <20221228063331.10756-1-biao.huang@mediatek.com>
In current driver, MAC will always enable 2ns delay in RGMII mode,
but that's not the correct usage.
Remove the dwmac_fix_mac_speed() in driver, and recommend "rgmii-id"
for phy-mode in device tree.
Fixes: f2d356a6ab71 ("stmmac: dwmac-mediatek: add support for mt8195")
Signed-off-by: Biao Huang <biao.huang@mediatek.com>
---
.../ethernet/stmicro/stmmac/dwmac-mediatek.c | 26 -------------------
1 file changed, 26 deletions(-)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c
index d42e1afb6521..2f7d8e4561d9 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c
@@ -90,7 +90,6 @@ struct mediatek_dwmac_plat_data {
struct mediatek_dwmac_variant {
int (*dwmac_set_phy_interface)(struct mediatek_dwmac_plat_data *plat);
int (*dwmac_set_delay)(struct mediatek_dwmac_plat_data *plat);
- void (*dwmac_fix_mac_speed)(void *priv, unsigned int speed);
/* clock ids to be requested */
const char * const *clk_list;
@@ -443,32 +442,9 @@ static int mt8195_set_delay(struct mediatek_dwmac_plat_data *plat)
return 0;
}
-static void mt8195_fix_mac_speed(void *priv, unsigned int speed)
-{
- struct mediatek_dwmac_plat_data *priv_plat = priv;
-
- if ((phy_interface_mode_is_rgmii(priv_plat->phy_mode))) {
- /* prefer 2ns fixed delay which is controlled by TXC_PHASE_CTRL,
- * when link speed is 1Gbps with RGMII interface,
- * Fall back to delay macro circuit for 10/100Mbps link speed.
- */
- if (speed == SPEED_1000)
- regmap_update_bits(priv_plat->peri_regmap,
- MT8195_PERI_ETH_CTRL0,
- MT8195_RGMII_TXC_PHASE_CTRL |
- MT8195_DLY_GTXC_ENABLE |
- MT8195_DLY_GTXC_INV |
- MT8195_DLY_GTXC_STAGES,
- MT8195_RGMII_TXC_PHASE_CTRL);
- else
- mt8195_set_delay(priv_plat);
- }
-}
-
static const struct mediatek_dwmac_variant mt8195_gmac_variant = {
.dwmac_set_phy_interface = mt8195_set_interface,
.dwmac_set_delay = mt8195_set_delay,
- .dwmac_fix_mac_speed = mt8195_fix_mac_speed,
.clk_list = mt8195_dwmac_clk_l,
.num_clks = ARRAY_SIZE(mt8195_dwmac_clk_l),
.dma_bit_mask = 35,
@@ -619,8 +595,6 @@ static int mediatek_dwmac_common_data(struct platform_device *pdev,
plat->bsp_priv = priv_plat;
plat->init = mediatek_dwmac_init;
plat->clks_config = mediatek_dwmac_clks_config;
- if (priv_plat->variant->dwmac_fix_mac_speed)
- plat->fix_mac_speed = priv_plat->variant->dwmac_fix_mac_speed;
plat->safety_feat_cfg = devm_kzalloc(&pdev->dev,
sizeof(*plat->safety_feat_cfg),
--
2.25.1
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next prev parent reply other threads:[~2022-12-28 7:06 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-28 6:33 [PATCH v6 0/2] arm64: dts: mt8195: Add Ethernet controller Biao Huang
2022-12-28 6:33 ` Biao Huang [this message]
2022-12-28 6:33 ` [PATCH v6 2/2] " Biao Huang
2022-12-28 16:13 ` Andrew Lunn
2022-12-29 0:42 ` Biao Huang (黄彪)
2022-12-29 1:06 ` Andrew Lunn
2022-12-29 2:46 ` Biao Huang (黄彪)
2022-12-30 1:15 ` [PATCH v6 0/2] " Jakub Kicinski
2022-12-30 2:10 ` Biao Huang (黄彪)
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