diff mbox series

net: dwmac-imx: add imx93 clock input support in RMII mode

Message ID 20241217084942.4071-1-othacehe@gnu.org (mailing list archive)
State Changes Requested
Delegated to: Netdev Maintainers
Headers show
Series net: dwmac-imx: add imx93 clock input support in RMII mode | expand

Checks

Context Check Description
netdev/series_format warning Single patches do not need cover letters; Target tree name not specified in the subject
netdev/tree_selection success Guessed tree name to be net-next
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 0 this patch: 0
netdev/build_tools success No tools touched, skip
netdev/cc_maintainers success CCed 15 of 15 maintainers
netdev/build_clang success Errors and warnings before: 5 this patch: 5
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 0 this patch: 0
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 31 lines checked
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0
netdev/contest success net-next-2024-12-19--12-00 (tests: 881)

Commit Message

Mathieu Othacehe Dec. 17, 2024, 8:49 a.m. UTC 
If the rmii_refclk_ext boolean is set, configure the ENET QOS TX_CLK pin
direction to input. Otherwise, it defaults to output.

That mirrors what is already happening for the imx8mp in the
imx8mp_set_intf_mode function.

Signed-off-by: Mathieu Othacehe <othacehe@gnu.org>
---
 drivers/net/ethernet/stmicro/stmmac/dwmac-imx.c | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

Comments

Jakub Kicinski Dec. 20, 2024, 10:01 p.m. UTC | #1 
On Tue, 17 Dec 2024 09:49:42 +0100 Mathieu Othacehe wrote:
> +			ret = regmap_update_bits(dwmac->intf_regmap,
> +						 dwmac->intf_reg_off +
> +						 MX93_GPR_CLK_SEL_OFFSET,
> +						 MX93_GPR_ENET_QOS_CLK_SEL_MASK,
> +						 0);

nit: regmap_clear_bits() ?
diff mbox series

Patch

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-imx.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-imx.c
index 43e0fbba4f77b..68b3fbdd46647 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-imx.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-imx.c
@@ -36,6 +36,8 @@ 
 #define MX93_GPR_ENET_QOS_INTF_SEL_RMII		(0x4 << 1)
 #define MX93_GPR_ENET_QOS_INTF_SEL_RGMII	(0x1 << 1)
 #define MX93_GPR_ENET_QOS_CLK_GEN_EN		(0x1 << 0)
+#define MX93_GPR_ENET_QOS_CLK_SEL_MASK		BIT_MASK(0)
+#define MX93_GPR_CLK_SEL_OFFSET			(4)
 
 #define DMA_BUS_MODE			0x00001000
 #define DMA_BUS_MODE_SFT_RESET		(0x1 << 0)
@@ -108,13 +110,22 @@  imx8dxl_set_intf_mode(struct plat_stmmacenet_data *plat_dat)
 static int imx93_set_intf_mode(struct plat_stmmacenet_data *plat_dat)
 {
 	struct imx_priv_data *dwmac = plat_dat->bsp_priv;
-	int val;
+	int val, ret;
 
 	switch (plat_dat->mac_interface) {
 	case PHY_INTERFACE_MODE_MII:
 		val = MX93_GPR_ENET_QOS_INTF_SEL_MII;
 		break;
 	case PHY_INTERFACE_MODE_RMII:
+		if (dwmac->rmii_refclk_ext) {
+			ret = regmap_update_bits(dwmac->intf_regmap,
+						 dwmac->intf_reg_off +
+						 MX93_GPR_CLK_SEL_OFFSET,
+						 MX93_GPR_ENET_QOS_CLK_SEL_MASK,
+						 0);
+			if (ret)
+				return ret;
+		}
 		val = MX93_GPR_ENET_QOS_INTF_SEL_RMII;
 		break;
 	case PHY_INTERFACE_MODE_RGMII: