linux-kernel - [PATCH 1/3] iio: adc: rockchip_saradc: fix bitmask for channels on SARADCv2

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Message-Id: <20240223-saradcv2-chan-mask-v1-1-84b06a0f623a@theobroma-systems.com>
Date: Fri, 23 Feb 2024 13:45:21 +0100
From: Quentin Schulz <foss+kernel@...il.net>
To: Jonathan Cameron <jic23@...nel.org>, 
 Lars-Peter Clausen <lars@...afoo.de>, Heiko Stuebner <heiko@...ech.de>, 
 AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>, 
 Andy Shevchenko <andy.shevchenko@...il.com>, 
 Shreeya Patel <shreeya.patel@...labora.com>, Simon Xue <xxm@...k-chips.com>, 
 Philipp Zabel <p.zabel@...gutronix.de>
Cc: Jonathan Cameron <Jonathan.Cameron@...wei.com>, 
 linux-iio@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
 linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org, 
 Quentin Schulz <quentin.schulz@...obroma-systems.com>, 
 Quentin Schulz <foss+kernel@...il.net>
Subject: [PATCH 1/3] iio: adc: rockchip_saradc: fix bitmask for channels on
 SARADCv2

From: Quentin Schulz <quentin.schulz@...obroma-systems.com>

The SARADCv2 on RK3588 (the only SoC currently supported that has an
SARADCv2) selects the channel through the channel_sel bitfield which is
the 4 lowest bits, therefore the mask should be GENMASK(3, 0) and not
GENMASK(15, 0).

Fixes: 757953f8ec69 ("iio: adc: rockchip_saradc: Add support for RK3588")
Cc: Quentin Schulz <foss+kernel@...il.net>
Signed-off-by: Quentin Schulz <quentin.schulz@...obroma-systems.com>
---
 drivers/iio/adc/rockchip_saradc.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iio/adc/rockchip_saradc.c b/drivers/iio/adc/rockchip_saradc.c
index dd94667a623b..2da8d6f3241a 100644
--- a/drivers/iio/adc/rockchip_saradc.c
+++ b/drivers/iio/adc/rockchip_saradc.c
@@ -52,7 +52,7 @@
 #define SARADC2_START			BIT(4)
 #define SARADC2_SINGLE_MODE		BIT(5)
 
-#define SARADC2_CONV_CHANNELS GENMASK(15, 0)
+#define SARADC2_CONV_CHANNELS GENMASK(3, 0)
 
 struct rockchip_saradc;
 

-- 
2.43.2