[PATCH] phy: armada-38x: add mux value for gbe port 0 on serdes 0

[Josua Mayer]

Armada 38x supports 3 functions on serdes #0:
- pcie port 0
- sata port 0
- gbe port 0

Add missing entry for gbe port 0 on serdes 0 to the gbe_mux array.

Because this array looks obscure to new readers, also add a comment
explaining the meaning of rows, columns and values.

Signed-off-by: Josua Mayer <josua at solid-run.com>
---
 drivers/phy/marvell/phy-armada38x-comphy.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/phy/marvell/phy-armada38x-comphy.c b/drivers/phy/marvell/phy-armada38x-comphy.c
index b7d99861526a..d3259984ee8e 100644
--- a/drivers/phy/marvell/phy-armada38x-comphy.c
+++ b/drivers/phy/marvell/phy-armada38x-comphy.c
@@ -47,8 +47,13 @@ struct a38x_comphy {
 	struct a38x_comphy_lane lane[MAX_A38X_COMPHY];
 };
 
+/*
+ * Map serdes lanes and gbe ports to serdes mux configuration values:
+ * row index = serdes lane,
+ * column index = gbe port number.
+ */
 static const u8 gbe_mux[MAX_A38X_COMPHY][MAX_A38X_PORTS] = {
-	{ 0, 0, 0 },
+	{ 3, 0, 0 },
 	{ 4, 5, 0 },
 	{ 0, 4, 0 },
 	{ 0, 0, 4 },

---
base-commit: b85ea95d086471afb4ad062012a4d73cd328fa86
change-id: 20240106-fix-a38x-comphy-sd0-gbe0-02b6861cf973

Sincerely,
-- 
Josua Mayer <josua at solid-run.com>