lkml.org 
[lkml]   [2021]   [May]   [14]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 2/3] net: stmmac: dwmac-rk: add support for rk3308 gmac
Date
The Rockchip RK3308 SoC has a gmac with only the RMII interface signals
exposed.
This patch adds support for it.

Signed-off-by: Tobias Schramm <t.schramm@manjaro.org>
---
.../net/ethernet/stmicro/stmmac/dwmac-rk.c | 49 +++++++++++++++++++
1 file changed, 49 insertions(+)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
index 8d28a536e1bb..584db4ce6e39 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c
@@ -482,6 +482,54 @@ static const struct rk_gmac_ops rk3288_ops = {
.set_rmii_speed = rk3288_set_rmii_speed,
};

+#define RK3308_GRF_MAC_CON0 0x04a0
+
+/* RK3308_GRF_MAC_CON0 */
+#define RK3308_GMAC_PHY_INTF_SEL_RMII (GRF_CLR_BIT(2) | GRF_CLR_BIT(3) | \
+ GRF_BIT(4))
+#define RK3308_GMAC_FLOW_CTRL GRF_BIT(3)
+#define RK3308_GMAC_FLOW_CTRL_CLR GRF_CLR_BIT(3)
+#define RK3308_GMAC_SPEED_10M GRF_CLR_BIT(0)
+#define RK3308_GMAC_SPEED_100M GRF_BIT(0)
+
+static void rk3308_set_to_rmii(struct rk_priv_data *bsp_priv)
+{
+ struct device *dev = &bsp_priv->pdev->dev;
+
+ if (IS_ERR(bsp_priv->grf)) {
+ dev_err(dev, "Missing rockchip,grf property\n");
+ return;
+ }
+
+ regmap_write(bsp_priv->grf, RK3308_GRF_MAC_CON0,
+ RK3308_GMAC_PHY_INTF_SEL_RMII);
+}
+
+static void rk3308_set_rmii_speed(struct rk_priv_data *bsp_priv, int speed)
+{
+ struct device *dev = &bsp_priv->pdev->dev;
+
+ if (IS_ERR(bsp_priv->grf)) {
+ dev_err(dev, "Missing rockchip,grf property\n");
+ return;
+ }
+
+ if (speed == 10) {
+ regmap_write(bsp_priv->grf, RK3308_GRF_MAC_CON0,
+ RK3308_GMAC_SPEED_10M);
+ } else if (speed == 100) {
+ regmap_write(bsp_priv->grf, RK3308_GRF_MAC_CON0,
+ RK3308_GMAC_SPEED_100M);
+ } else {
+ dev_err(dev, "unknown speed value for RMII! speed=%d", speed);
+ }
+}
+
+static const struct rk_gmac_ops rk3308_ops = {
+ .set_to_rmii = rk3308_set_to_rmii,
+ .set_rmii_speed = rk3308_set_rmii_speed,
+};
+
#define RK3328_GRF_MAC_CON0 0x0900
#define RK3328_GRF_MAC_CON1 0x0904
#define RK3328_GRF_MAC_CON2 0x0908
@@ -1477,6 +1525,7 @@ static const struct of_device_id rk_gmac_dwmac_match[] = {
{ .compatible = "rockchip,rk3128-gmac", .data = &rk3128_ops },
{ .compatible = "rockchip,rk3228-gmac", .data = &rk3228_ops },
{ .compatible = "rockchip,rk3288-gmac", .data = &rk3288_ops },
+ { .compatible = "rockchip,rk3308-gmac", .data = &rk3308_ops },
{ .compatible = "rockchip,rk3328-gmac", .data = &rk3328_ops },
{ .compatible = "rockchip,rk3366-gmac", .data = &rk3366_ops },
{ .compatible = "rockchip,rk3368-gmac", .data = &rk3368_ops },
--
2.31.1
\
 
 \ /
  Last update: 2021-05-14 13:37    [W:0.042 / U:0.284 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site