[U-Boot] [PATCH v2 2/3] i2c: muxes: pca954x: clarify enable field

[Luca Ceresoli]

The chip_desc.enable field is used only for muxes, not for switches.
Document it and remove the unused values.

Signed-off-by: Luca Ceresoli <luca at lucaceresoli.net>
Reviewed-by: Heiko Schocher <hs at denx.de>

---

Changes v1 -> v2:
 - fix typo in commit message (Michal)
---
 drivers/i2c/muxes/pca954x.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/i2c/muxes/pca954x.c b/drivers/i2c/muxes/pca954x.c
index bd4e9abe5f3c..5669753ce14d 100644
--- a/drivers/i2c/muxes/pca954x.c
+++ b/drivers/i2c/muxes/pca954x.c
@@ -22,7 +22,7 @@ enum pca_type {
 };
 
 struct chip_desc {
-	u8 enable;
+	u8 enable; /* Enable mask in ctl register (used for muxes only) */
 	enum muxtype {
 		pca954x_ismux = 0,
 		pca954x_isswi,
@@ -48,12 +48,10 @@ static const struct chip_desc chips[] = {
 		.width = 8,
 	},
 	[PCA9548] = {
-		.enable = 0x8,
 		.muxtype = pca954x_isswi,
 		.width = 8,
 	},
 	[PCA9646] = {
-		.enable = 0x0,
 		.muxtype = pca954x_isswi,
 		.width = 4,
 	},
-- 
2.21.0