diff options
| author | Tim Lunn <tim@feathertop.org> | 2023-12-03 23:39:59 +1100 |
|---|---|---|
| committer | Wolfram Sang <wsa@kernel.org> | 2024-01-18 21:10:42 +0100 |
| commit | 92a85b7c6262f19c65a1c115cf15f411ba65a57c (patch) | |
| tree | eaa92c384e1c924e9710f0123af7439c5160a6ac | |
| parent | 187432b82173c86e0450d0e3d516b415ab2455f8 (diff) | |
| download | linux-bcache-92a85b7c6262f19c65a1c115cf15f411ba65a57c.tar.gz | |
i2c: rk3x: Adjust mask/value offset for i2c2 on rv1126
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@feathertop.org>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Andi Shyti <andi.shyti@kernel.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
| -rw-r--r-- | drivers/i2c/busses/i2c-rk3x.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/i2c/busses/i2c-rk3x.c b/drivers/i2c/busses/i2c-rk3x.c index a044ca0c35a193..06fec2344575d5 100644 --- a/drivers/i2c/busses/i2c-rk3x.c +++ b/drivers/i2c/busses/i2c-rk3x.c @@ -1288,8 +1288,12 @@ 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) { |