diff options
| author |  Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
| 2023-06-19 11:23:59 +0200 |
|---|---|---|
| committer |  Jakub Kicinski <kuba@kernel.org>
| 2023-06-20 20:44:38 -0700 |
| commit | 463120c31c58bbca0237dd6ae73d20f77609c749 (patch) | |
| tree | 46b8386316e35ece5b4b47844d50a6aa1aaeb40b /drivers/net/ethernet | |
| parent | net: stmmac: dwmac-qcom-ethqos: prepare the driver for more PHY modes (diff) | |
| download | linux-463120c31c58.tar.gz linux-463120c31c58.tar.bz2 linux-463120c31c58.zip | |
net: stmmac: dwmac-qcom-ethqos: add support for SGMII
On sa8775p the MAC is connected to the external PHY over SGMII so add
support for it to the driver.
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/net/ethernet')
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c index 0ececc951528..bdf59a179f87 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c @@ -75,6 +75,10 @@ #define RGMII_CONFIG2_DATA_DIVIDE_CLK_SEL BIT(6) #define RGMII_CONFIG2_TX_CLK_PHASE_SHIFT_EN BIT(5) +/* MAC_CTRL_REG bits */ +#define ETHQOS_MAC_CTRL_SPEED_MODE BIT(14) +#define ETHQOS_MAC_CTRL_PORT_SEL BIT(15) + struct ethqos_emac_por { unsigned int offset; unsigned int value; @@ -92,6 +96,7 @@ struct ethqos_emac_driver_data { struct qcom_ethqos { struct platform_device *pdev; void __iomem *rgmii_base; + void __iomem *mac_base; int (*configure_func)(struct qcom_ethqos *ethqos); unsigned int link_clk_rate; @@ -559,6 +564,33 @@ static int ethqos_configure_rgmii(struct qcom_ethqos *ethqos) return 0; } +static int ethqos_configure_sgmii(struct qcom_ethqos *ethqos) +{ + int val; + + val = readl(ethqos->mac_base + MAC_CTRL_REG); + + switch (ethqos->speed) { + case SPEED_1000: + val &= ~ETHQOS_MAC_CTRL_PORT_SEL; + rgmii_updatel(ethqos, RGMII_CONFIG2_RGMII_CLK_SEL_CFG, + RGMII_CONFIG2_RGMII_CLK_SEL_CFG, + RGMII_IO_MACRO_CONFIG2); + break; + case SPEED_100: + val |= ETHQOS_MAC_CTRL_PORT_SEL | ETHQOS_MAC_CTRL_SPEED_MODE; + break; + case SPEED_10: + val |= ETHQOS_MAC_CTRL_PORT_SEL; + val &= ~ETHQOS_MAC_CTRL_SPEED_MODE; + break; + } + + writel(val, ethqos->mac_base + MAC_CTRL_REG); + + return val; +} + static int ethqos_configure(struct qcom_ethqos *ethqos) { return ethqos->configure_func(ethqos); @@ -663,6 +695,9 @@ static int qcom_ethqos_probe(struct platform_device *pdev) case PHY_INTERFACE_MODE_RGMII_TXID: ethqos->configure_func = ethqos_configure_rgmii; break; + case PHY_INTERFACE_MODE_SGMII: + ethqos->configure_func = ethqos_configure_sgmii; + break; case -ENODEV: ret = -ENODEV; goto out_config_dt; @@ -678,6 +713,8 @@ static int qcom_ethqos_probe(struct platform_device *pdev) goto out_config_dt; } + ethqos->mac_base = stmmac_res.addr; + data = of_device_get_match_data(dev); ethqos->por = data->por; ethqos->num_por = data->num_por; |