[PATCH] media: i2c: imx471: Fix register size for IMX471_REG_DPGA_USE_GLOBAL_GAIN

[Kate Hsuan]

The IMX471_REG_DPGA_USE_GLOBAL_GAIN register was incorrectly defined as a
16-bit register, preventing global gain from enabling correctly. As a
result, only the green channel gain was applied instead of the intended
global gain.

Change the register size to 8 bits to ensure global gain is properly
enabled.

Link: https://lore.kernel.org/linux-media/35240e45-c73b-4425-923a-c1026386ed3c@slotpi17m12/
Fixes: be1589e567ae ("media: i2c: imx471: Add Sony IMX471 image sensor driver")
Signed-off-by: Kate Hsuan <hpa@xxxxxxxxxx>
---
 drivers/media/i2c/imx471.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/media/i2c/imx471.c b/drivers/media/i2c/imx471.c
index 4053aed84340..b442b083286d 100644
--- a/drivers/media/i2c/imx471.c
+++ b/drivers/media/i2c/imx471.c
@@ -46,7 +46,7 @@
 #define IMX471_ANA_GAIN_DEFAULT			0
 
 /* Digital gain control */
-#define IMX471_REG_DPGA_USE_GLOBAL_GAIN		CCI_REG16(0x3ff9)
+#define IMX471_REG_DPGA_USE_GLOBAL_GAIN		CCI_REG8(0x3ff9)
 #define IMX471_REG_DIG_GAIN_GLOBAL		CCI_REG16(0x020e)
 #define IMX471_DGTL_GAIN_MIN			256
 #define IMX471_DGTL_GAIN_MAX			4095
-- 
2.55.0