[PATCH v2 5/7] net: dwc_eth_qos_rockchip: Add support for RK3588
Ramon Fried
rfried.dev at gmail.com
Fri Oct 6 22:35:13 CEST 2023
On Sun, Oct 1, 2023 at 10:17 PM Jonas Karlman <jonas at kwiboo.se> wrote:
>
> Add rk_gmac_ops and other special handling that is needed for GMAC to
> work on RK3588.
>
> rk_gmac_ops was ported from linux commits:
> 2f2b60a0ec28 ("net: ethernet: stmmac: dwmac-rk: Add gmac support for rk3588")
> 88619e77b33d ("net: stmmac: rk3588: Allow multiple gmac controller")
>
> Signed-off-by: Jonas Karlman <jonas at kwiboo.se>
> Reviewed-by: Kever Yang <kever.yang at rock-chips.com>
> ---
> Cc: David Wu <david.wu at rock-chips.com>
> Cc: Sebastian Reichel <sebastian.reichel at collabora.com>
> Cc: Benjamin Gaignard <benjamin.gaignard at collabora.com>
> ---
> v2:
> - Collect r-b tag
>
> drivers/net/dwc_eth_qos.c | 4 +
> drivers/net/dwc_eth_qos_rockchip.c | 182 ++++++++++++++++++++++++++++-
> 2 files changed, 182 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/net/dwc_eth_qos.c b/drivers/net/dwc_eth_qos.c
> index 9fb98a2c3c74..dc04416865dd 100644
> --- a/drivers/net/dwc_eth_qos.c
> +++ b/drivers/net/dwc_eth_qos.c
> @@ -1712,6 +1712,10 @@ static const struct udevice_id eqos_ids[] = {
> .compatible = "rockchip,rk3568-gmac",
> .data = (ulong)&eqos_rockchip_config
> },
> + {
> + .compatible = "rockchip,rk3588-gmac",
> + .data = (ulong)&eqos_rockchip_config
> + },
> #endif
> #if IS_ENABLED(CONFIG_DWC_ETH_QOS_QCOM)
> {
> diff --git a/drivers/net/dwc_eth_qos_rockchip.c b/drivers/net/dwc_eth_qos_rockchip.c
> index 05edc098f50d..20fd3a25c3dd 100644
> --- a/drivers/net/dwc_eth_qos_rockchip.c
> +++ b/drivers/net/dwc_eth_qos_rockchip.c
> @@ -28,6 +28,7 @@ struct rk_gmac_ops {
> int tx_delay, int rx_delay);
> int (*set_to_rmii)(struct udevice *dev);
> int (*set_gmac_speed)(struct udevice *dev);
> + void (*set_clock_selection)(struct udevice *dev, bool enable);
> u32 regs[3];
> };
>
> @@ -35,7 +36,9 @@ struct rockchip_platform_data {
> struct reset_ctl_bulk resets;
> const struct rk_gmac_ops *ops;
> int id;
> + bool clock_input;
> struct regmap *grf;
> + struct regmap *php_grf;
> };
>
> #define HIWORD_UPDATE(val, mask, shift) \
> @@ -129,6 +132,137 @@ static int rk3568_set_gmac_speed(struct udevice *dev)
> return 0;
> }
>
> +/* sys_grf */
> +#define RK3588_GRF_GMAC_CON7 0x031c
> +#define RK3588_GRF_GMAC_CON8 0x0320
> +#define RK3588_GRF_GMAC_CON9 0x0324
> +
> +#define RK3588_GMAC_RXCLK_DLY_ENABLE(id) GRF_BIT(2 * (id) + 3)
> +#define RK3588_GMAC_RXCLK_DLY_DISABLE(id) GRF_CLR_BIT(2 * (id) + 3)
> +#define RK3588_GMAC_TXCLK_DLY_ENABLE(id) GRF_BIT(2 * (id) + 2)
> +#define RK3588_GMAC_TXCLK_DLY_DISABLE(id) GRF_CLR_BIT(2 * (id) + 2)
> +
> +#define RK3588_GMAC_CLK_RX_DL_CFG(val) HIWORD_UPDATE(val, 0xFF, 8)
> +#define RK3588_GMAC_CLK_TX_DL_CFG(val) HIWORD_UPDATE(val, 0xFF, 0)
> +
> +/* php_grf */
> +#define RK3588_GRF_GMAC_CON0 0x0008
> +#define RK3588_GRF_CLK_CON1 0x0070
> +
> +#define RK3588_GMAC_PHY_INTF_SEL_RGMII(id) \
> + (GRF_BIT(3 + (id) * 6) | GRF_CLR_BIT(4 + (id) * 6) | GRF_CLR_BIT(5 + (id) * 6))
> +#define RK3588_GMAC_PHY_INTF_SEL_RMII(id) \
> + (GRF_CLR_BIT(3 + (id) * 6) | GRF_CLR_BIT(4 + (id) * 6) | GRF_BIT(5 + (id) * 6))
> +
> +#define RK3588_GMAC_CLK_RMII_MODE(id) GRF_BIT(5 * (id))
> +#define RK3588_GMAC_CLK_RGMII_MODE(id) GRF_CLR_BIT(5 * (id))
> +
> +#define RK3588_GMAC_CLK_SELET_CRU(id) GRF_BIT(5 * (id) + 4)
> +#define RK3588_GMAC_CLK_SELET_IO(id) GRF_CLR_BIT(5 * (id) + 4)
> +
> +#define RK3588_GMAC_CLK_RMII_DIV2(id) GRF_BIT(5 * (id) + 2)
> +#define RK3588_GMAC_CLK_RMII_DIV20(id) GRF_CLR_BIT(5 * (id) + 2)
> +
> +#define RK3588_GMAC_CLK_RGMII_DIV1(id) \
> + (GRF_CLR_BIT(5 * (id) + 2) | GRF_CLR_BIT(5 * (id) + 3))
> +#define RK3588_GMAC_CLK_RGMII_DIV5(id) \
> + (GRF_BIT(5 * (id) + 2) | GRF_BIT(5 * (id) + 3))
> +#define RK3588_GMAC_CLK_RGMII_DIV50(id) \
> + (GRF_CLR_BIT(5 * (id) + 2) | GRF_BIT(5 * (id) + 3))
> +
> +#define RK3588_GMAC_CLK_RMII_GATE(id) GRF_BIT(5 * (id) + 1)
> +#define RK3588_GMAC_CLK_RMII_NOGATE(id) GRF_CLR_BIT(5 * (id) + 1)
> +
> +static int rk3588_set_to_rgmii(struct udevice *dev,
> + int tx_delay, int rx_delay)
> +{
> + struct eth_pdata *pdata = dev_get_plat(dev);
> + struct rockchip_platform_data *data = pdata->priv_pdata;
> + u32 offset_con, id = data->id;
> +
> + offset_con = data->id == 1 ? RK3588_GRF_GMAC_CON9 :
> + RK3588_GRF_GMAC_CON8;
> +
> + regmap_write(data->php_grf, RK3588_GRF_GMAC_CON0,
> + RK3588_GMAC_PHY_INTF_SEL_RGMII(id));
> +
> + regmap_write(data->php_grf, RK3588_GRF_CLK_CON1,
> + RK3588_GMAC_CLK_RGMII_MODE(id));
> +
> + regmap_write(data->grf, RK3588_GRF_GMAC_CON7,
> + RK3588_GMAC_RXCLK_DLY_ENABLE(id) |
> + RK3588_GMAC_TXCLK_DLY_ENABLE(id));
> +
> + regmap_write(data->grf, offset_con,
> + RK3588_GMAC_CLK_RX_DL_CFG(rx_delay) |
> + RK3588_GMAC_CLK_TX_DL_CFG(tx_delay));
> +
> + return 0;
> +}
> +
> +static int rk3588_set_to_rmii(struct udevice *dev)
> +{
> + struct eth_pdata *pdata = dev_get_plat(dev);
> + struct rockchip_platform_data *data = pdata->priv_pdata;
> +
> + regmap_write(data->php_grf, RK3588_GRF_GMAC_CON0,
> + RK3588_GMAC_PHY_INTF_SEL_RMII(data->id));
> +
> + regmap_write(data->php_grf, RK3588_GRF_CLK_CON1,
> + RK3588_GMAC_CLK_RMII_MODE(data->id));
> +
> + return 0;
> +}
> +
> +static int rk3588_set_gmac_speed(struct udevice *dev)
> +{
> + struct eqos_priv *eqos = dev_get_priv(dev);
> + struct eth_pdata *pdata = dev_get_plat(dev);
> + struct rockchip_platform_data *data = pdata->priv_pdata;
> + u32 val = 0, id = data->id;
> +
> + switch (eqos->phy->speed) {
> + case SPEED_10:
> + if (pdata->phy_interface == PHY_INTERFACE_MODE_RMII)
> + val = RK3588_GMAC_CLK_RMII_DIV20(id);
> + else
> + val = RK3588_GMAC_CLK_RGMII_DIV50(id);
> + break;
> + case SPEED_100:
> + if (pdata->phy_interface == PHY_INTERFACE_MODE_RMII)
> + val = RK3588_GMAC_CLK_RMII_DIV2(id);
> + else
> + val = RK3588_GMAC_CLK_RGMII_DIV5(id);
> + break;
> + case SPEED_1000:
> + if (pdata->phy_interface != PHY_INTERFACE_MODE_RMII)
> + val = RK3588_GMAC_CLK_RGMII_DIV1(id);
> + else
> + return -EINVAL;
> + break;
> + default:
> + return -EINVAL;
> + }
> +
> + regmap_write(data->php_grf, RK3588_GRF_CLK_CON1, val);
> +
> + return 0;
> +}
> +
> +static void rk3588_set_clock_selection(struct udevice *dev, bool enable)
> +{
> + struct eth_pdata *pdata = dev_get_plat(dev);
> + struct rockchip_platform_data *data = pdata->priv_pdata;
> +
> + u32 val = data->clock_input ? RK3588_GMAC_CLK_SELET_IO(data->id) :
> + RK3588_GMAC_CLK_SELET_CRU(data->id);
> +
> + val |= enable ? RK3588_GMAC_CLK_RMII_NOGATE(data->id) :
> + RK3588_GMAC_CLK_RMII_GATE(data->id);
> +
> + regmap_write(data->php_grf, RK3588_GRF_CLK_CON1, val);
> +}
> +
> static const struct rk_gmac_ops rk_gmac_ops[] = {
> {
> .compatible = "rockchip,rk3568-gmac",
> @@ -141,6 +275,18 @@ static const struct rk_gmac_ops rk_gmac_ops[] = {
> 0x0, /* sentinel */
> },
> },
> + {
> + .compatible = "rockchip,rk3588-gmac",
> + .set_to_rgmii = rk3588_set_to_rgmii,
> + .set_to_rmii = rk3588_set_to_rmii,
> + .set_gmac_speed = rk3588_set_gmac_speed,
> + .set_clock_selection = rk3588_set_clock_selection,
> + .regs = {
> + 0xfe1b0000, /* gmac0 */
> + 0xfe1c0000, /* gmac1 */
> + 0x0, /* sentinel */
> + },
> + },
> { }
> };
>
> @@ -162,6 +308,7 @@ static int eqos_probe_resources_rk(struct udevice *dev)
> struct eqos_priv *eqos = dev_get_priv(dev);
> struct eth_pdata *pdata = dev_get_plat(dev);
> struct rockchip_platform_data *data;
> + const char *clock_in_out;
> int reset_flags = GPIOD_IS_OUT | GPIOD_IS_OUT_ACTIVE;
> int ret;
>
> @@ -199,6 +346,16 @@ static int eqos_probe_resources_rk(struct udevice *dev)
> goto err_free;
> }
>
> + if (device_is_compatible(dev, "rockchip,rk3588-gmac")) {
> + data->php_grf =
> + syscon_regmap_lookup_by_phandle(dev, "rockchip,php-grf");
> + if (IS_ERR(data->php_grf)) {
> + dev_err(dev, "Missing rockchip,php-grf property\n");
> + ret = -EINVAL;
> + goto err_free;
> + }
> + }
> +
> ret = reset_get_bulk(dev, &data->resets);
> if (ret < 0)
> goto err_free;
> @@ -211,12 +368,20 @@ static int eqos_probe_resources_rk(struct udevice *dev)
> goto err_release_resets;
> }
>
> - ret = clk_get_by_name(dev, "clk_mac_speed", &eqos->clk_tx);
> - if (ret) {
> - dev_dbg(dev, "clk_get_by_name(clk_mac_speed) failed: %d", ret);
> - goto err_free_clk_master_bus;
> + if (device_is_compatible(dev, "rockchip,rk3568-gmac")) {
> + ret = clk_get_by_name(dev, "clk_mac_speed", &eqos->clk_tx);
> + if (ret) {
> + dev_dbg(dev, "clk_get_by_name(clk_mac_speed) failed: %d", ret);
> + goto err_free_clk_master_bus;
> + }
> }
>
> + clock_in_out = dev_read_string(dev, "clock_in_out");
> + if (clock_in_out && !strcmp(clock_in_out, "input"))
> + data->clock_input = true;
> + else
> + data->clock_input = false;
> +
> /* snps,reset props are deprecated, do bare minimum to support them */
> if (dev_read_bool(dev, "snps,reset-active-low"))
> reset_flags |= GPIOD_ACTIVE_LOW;
> @@ -273,6 +438,12 @@ static int eqos_start_resets_rk(struct udevice *dev)
>
> static int eqos_stop_clks_rk(struct udevice *dev)
> {
> + struct eth_pdata *pdata = dev_get_plat(dev);
> + struct rockchip_platform_data *data = pdata->priv_pdata;
> +
> + if (data->ops->set_clock_selection)
> + data->ops->set_clock_selection(dev, false);
> +
> return 0;
> }
>
> @@ -293,6 +464,9 @@ static int eqos_start_clks_rk(struct udevice *dev)
> udelay(eqos->reset_delays[2]);
> }
>
> + if (data->ops->set_clock_selection)
> + data->ops->set_clock_selection(dev, true);
> +
> tx_delay = dev_read_u32_default(dev, "tx_delay", 0x30);
> rx_delay = dev_read_u32_default(dev, "rx_delay", 0x10);
>
> --
> 2.42.0
>
Reviewed-by: Ramon Fried <rfried.dev at gmail.com>
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