[PATCH 1/2] iio: adc: aspeed: Remove the trim valid dts property.

[Billy Tsai]

The dts property "aspeed,trim-data-valid" is used to determin whether to
read the OTP register. If the image with the aspeed,trim-data-vali
install to the chip without valid trimming data the adc controller will
become confused. This patch use the default otp value 0 as a criterion
for determining whether trimming data is valid instead of the dts
property. The chip with actually trimming value is 0 should be filter out.

Signed-off-by: Billy Tsai <billy_tsai@xxxxxxxxxxxxxx>
---
 drivers/iio/adc/aspeed_adc.c | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/drivers/iio/adc/aspeed_adc.c b/drivers/iio/adc/aspeed_adc.c
index ffae64f39221..0f065f0bb8e7 100644
--- a/drivers/iio/adc/aspeed_adc.c
+++ b/drivers/iio/adc/aspeed_adc.c
@@ -201,6 +201,8 @@ static int aspeed_adc_set_trim_data(struct iio_dev *indio_dev)
 				((scu_otp) &
 				 (data->model_data->trim_locate->field)) >>
 				__ffs(data->model_data->trim_locate->field);
+			if (!trimming_val)
+				trimming_val = 0x8;
 		}
 		dev_dbg(data->dev,
 			"trimming val = %d, offset = %08x, fields = %08x\n",
@@ -562,12 +564,9 @@ static int aspeed_adc_probe(struct platform_device *pdev)
 	if (ret)
 		return ret;
 
-	if (of_find_property(data->dev->of_node, "aspeed,trim-data-valid",
-			     NULL)) {
-		ret = aspeed_adc_set_trim_data(indio_dev);
-		if (ret)
-			return ret;
-	}
+	ret = aspeed_adc_set_trim_data(indio_dev);
+	if (ret)
+		return ret;
 
 	if (of_find_property(data->dev->of_node, "aspeed,battery-sensing",
 			     NULL)) {
-- 
2.25.1