From: Biao Huang <biao.huang@mediatek.com>
To: David Miller <davem@davemloft.net>,
Rob Herring <robh+dt@kernel.org>,
Bartosz Golaszewski <brgl@bgdev.pl>,
Fabien Parent <fparent@baylibre.com>
Cc: Jakub Kicinski <kuba@kernel.org>, Felix Fietkau <nbd@nbd.name>,
"John Crispin" <john@phrozen.org>,
Sean Wang <sean.wang@mediatek.com>,
Mark Lee <Mark-MC.Lee@mediatek.com>,
Matthias Brugger <matthias.bgg@gmail.com>,
<netdev@vger.kernel.org>, <devicetree@vger.kernel.org>,
<linux-kernel@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-mediatek@lists.infradead.org>,
Biao Huang <biao.huang@mediatek.com>,
Yinghua Pan <ot_yinghua.pan@mediatek.com>,
<srv_heupstream@mediatek.com>,
Macpaul Lin <macpaul.lin@mediatek.com>
Subject: [PATCH net-next v1 6/9] net: ethernet: mtk-star-emac: add timing adjustment support
Date: Thu, 20 Jan 2022 15:02:23 +0800 [thread overview]
Message-ID: <20220120070226.1492-7-biao.huang@mediatek.com> (raw)
In-Reply-To: <20220120070226.1492-1-biao.huang@mediatek.com>
Add simple clock inversion for timing adjustment in driver.
Add property "mediatek,txc-inverse" or "mediatek,rxc-inverse" to
device node when necessary.
Signed-off-by: Biao Huang <biao.huang@mediatek.com>
Signed-off-by: Yinghua Pan <ot_yinghua.pan@mediatek.com>
---
drivers/net/ethernet/mediatek/mtk_star_emac.c | 34 +++++++++++++++++++
1 file changed, 34 insertions(+)
diff --git a/drivers/net/ethernet/mediatek/mtk_star_emac.c b/drivers/net/ethernet/mediatek/mtk_star_emac.c
index ab2fe72fdd6a..e37fa2cb5433 100644
--- a/drivers/net/ethernet/mediatek/mtk_star_emac.c
+++ b/drivers/net/ethernet/mediatek/mtk_star_emac.c
@@ -131,6 +131,11 @@ static const char *const mtk_star_clk_names[] = { "core", "reg", "trans" };
#define MTK_STAR_REG_INT_MASK 0x0054
#define MTK_STAR_BIT_INT_MASK_FNRC BIT(6)
+/* Delay-Macro Register */
+#define MTK_STAR_REG_TEST0 0x0058
+#define MTK_STAR_BIT_INV_RX_CLK BIT(30)
+#define MTK_STAR_BIT_INV_TX_CLK BIT(31)
+
/* Misc. Config Register */
#define MTK_STAR_REG_TEST1 0x005c
#define MTK_STAR_BIT_TEST1_RST_HASH_MBIST BIT(31)
@@ -268,6 +273,8 @@ struct mtk_star_priv {
int duplex;
int pause;
bool rmii_rxc;
+ bool rx_inv;
+ bool tx_inv;
const struct mtk_star_compat *compat_data;
@@ -1450,6 +1457,25 @@ static void mtk_star_clk_disable_unprepare(void *data)
clk_bulk_disable_unprepare(MTK_STAR_NCLKS, priv->clks);
}
+static int mtk_star_set_timing(struct mtk_star_priv *priv)
+{
+ struct device *dev = mtk_star_get_dev(priv);
+ unsigned int delay_val = 0;
+
+ switch (priv->phy_intf) {
+ case PHY_INTERFACE_MODE_RMII:
+ delay_val |= FIELD_PREP(MTK_STAR_BIT_INV_RX_CLK, priv->rx_inv);
+ delay_val |= FIELD_PREP(MTK_STAR_BIT_INV_TX_CLK, priv->tx_inv);
+ break;
+ default:
+ dev_err(dev, "This interface not supported\n");
+ return -EINVAL;
+ }
+
+ regmap_write(priv->regs, MTK_STAR_REG_TEST0, delay_val);
+
+ return 0;
+}
static int mtk_star_probe(struct platform_device *pdev)
{
struct device_node *of_node;
@@ -1532,6 +1558,8 @@ static int mtk_star_probe(struct platform_device *pdev)
}
priv->rmii_rxc = of_property_read_bool(of_node, "mediatek,rmii-rxc");
+ priv->rx_inv = of_property_read_bool(of_node, "mediatek,rxc-inverse");
+ priv->tx_inv = of_property_read_bool(of_node, "mediatek,txc-inverse");
if (priv->compat_data->set_interface_mode) {
ret = priv->compat_data->set_interface_mode(ndev);
@@ -1541,6 +1569,12 @@ static int mtk_star_probe(struct platform_device *pdev)
}
}
+ ret = mtk_star_set_timing(priv);
+ if (ret) {
+ dev_err(dev, "Failed to set timing, err = %d\n", ret);
+ return -EINVAL;
+ }
+
ret = dma_set_mask_and_coherent(dev, DMA_BIT_MASK(32));
if (ret) {
dev_err(dev, "unsupported DMA mask\n");
--
2.25.1
next prev parent reply other threads:[~2022-01-20 7:03 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-20 7:02 [PATCH net-next v1 0/9] add more features support for mtk-star-emac Biao Huang
2022-01-20 7:02 ` [PATCH net-next v1 1/9] net: ethernet: mtk-star-emac: store bit_clk_div in compat structure Biao Huang
2022-01-25 9:50 ` Bartosz Golaszewski
2022-01-27 0:47 ` Biao Huang
2022-01-20 7:02 ` [PATCH net-next v1 2/9] net: ethernet: mtk-star-emac: modify IRQ trigger flags Biao Huang
2022-01-25 10:22 ` Bartosz Golaszewski
2022-01-27 1:13 ` Biao Huang
2022-01-20 7:02 ` [PATCH net-next v1 3/9] net: ethernet: mtk-star-emac: add support for MT8365 SoC Biao Huang
2022-01-25 10:21 ` Bartosz Golaszewski
2022-01-27 0:51 ` Biao Huang
2022-01-20 7:02 ` [PATCH net-next v1 4/9] dt-bindings: net: mtk-star-emac: add support for MT8365 Biao Huang
2022-01-25 10:23 ` Bartosz Golaszewski
2022-01-27 1:13 ` Biao Huang
2022-01-20 7:02 ` [PATCH net-next v1 5/9] net: ethernet: mtk-star-emac: add clock pad selection for RMII Biao Huang
2022-01-20 7:02 ` Biao Huang [this message]
2022-01-20 7:02 ` [PATCH net-next v1 7/9] dt-bindings: net: mtk-star-emac: add description for new properties Biao Huang
2022-01-20 7:02 ` [PATCH net-next v1 8/9] net: ethernet: mtk-star-emac: add support for MII interface Biao Huang
2022-01-20 7:02 ` [PATCH net-next v1 9/9] net: ethernet: mtk-star-emac: separate tx/rx handling with two NAPIs Biao Huang
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