This is a note to let you know that I've just added the patch titled
i2c: rk3x: Adjust mask/value offset for i2c2 on rv1126
to the 6.6-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
i2c-rk3x-adjust-mask-value-offset-for-i2c2-on-rv1126.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 570c41f72b6144622322d862c061edb66d89dad1
Author: Tim Lunn <tim@xxxxxxxxxxxxxx>
Date: Sun Dec 3 23:39:59 2023 +1100
i2c: rk3x: Adjust mask/value offset for i2c2 on rv1126
[ Upstream commit 92a85b7c6262f19c65a1c115cf15f411ba65a57c ]
Rockchip RV1126 is using old style i2c controller, the i2c2
bus uses a non-sequential offset in the grf register for the
mask/value bits for this bus.
This patch fixes i2c2 bus on rv1126 SoCs.
Signed-off-by: Tim Lunn <tim@xxxxxxxxxxxxxx>
Acked-by: Heiko Stuebner <heiko@xxxxxxxxx>
Reviewed-by: Andi Shyti <andi.shyti@xxxxxxxxxx>
Signed-off-by: Wolfram Sang <wsa@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/i2c/busses/i2c-rk3x.c b/drivers/i2c/busses/i2c-rk3x.c
index 4362db7c5789..086fdf262e7b 100644
--- a/drivers/i2c/busses/i2c-rk3x.c
+++ b/drivers/i2c/busses/i2c-rk3x.c
@@ -1295,8 +1295,12 @@ static int rk3x_i2c_probe(struct platform_device *pdev)
return -EINVAL;
}
- /* 27+i: write mask, 11+i: value */
- value = BIT(27 + bus_nr) | BIT(11 + bus_nr);
+ /* rv1126 i2c2 uses non-sequential write mask 20, value 4 */
+ if (i2c->soc_data == &rv1126_soc_data && bus_nr == 2)
+ value = BIT(20) | BIT(4);
+ else
+ /* 27+i: write mask, 11+i: value */
+ value = BIT(27 + bus_nr) | BIT(11 + bus_nr);
ret = regmap_write(grf, i2c->soc_data->grf_offset, value);
if (ret != 0) {
