[PATCH AUTOSEL 6.6 31/31] i2c: rk3x: Adjust mask/value offset for i2c2 on rv1126
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REVIEWED: 6 (6M)
From: Sasha Levin <sashal@kernel.org>
Date: 2024-01-28 16:14:11
Also in:
linux-i2c, linux-rockchip, lkml, stable
Subsystem:
arm/rockchip soc support, i2c subsystem, i2c subsystem host drivers, the rest · Maintainers:
Heiko Stuebner, Andi Shyti, Linus Torvalds
2 review trailers (2 from subsystem maintainers).
From: Tim Lunn <redacted> [ 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 <redacted> Acked-by: Heiko Stuebner <heiko@sntech.de> Reviewed-by: Andi Shyti <andi.shyti@kernel.org> Signed-off-by: Wolfram Sang <wsa@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org> --- drivers/i2c/busses/i2c-rk3x.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-)
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) {
--
2.43.0
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