| Message ID | 20200907211712.9697-2-chris.packham@alliedtelesis.co.nz (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | 98dx3236 i2c related fixes | expand |
On Mon, Sep 7, 2020 at 11:17 PM Chris Packham <chris.packham@alliedtelesis.co.nz> wrote: > Per the datasheet the i2c functions use MPP_Sel=0x1. They are documented > as using MPP_Sel=0x4 as well but mixing 0x1 and 0x4 is clearly wrong. On > the board tested 0x4 resulted in a non-functioning i2c bus so stick with > 0x1 which works. > > Fixes: d7ae8f8dee7f ("pinctrl: mvebu: pinctrl driver for 98DX3236 SoC") > Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz> > Reviewed-by: Andrew Lunn <andrew@lunn.ch> This patch 1/3 applied for pin control fixes. Patches 2 & 3 should go via the SoC tree. Yours, Linus Walleij
diff --git a/drivers/pinctrl/mvebu/pinctrl-armada-xp.c b/drivers/pinctrl/mvebu/pinctrl-armada-xp.c index a767a05fa3a0..48e2a6c56a83 100644 --- a/drivers/pinctrl/mvebu/pinctrl-armada-xp.c +++ b/drivers/pinctrl/mvebu/pinctrl-armada-xp.c @@ -414,7 +414,7 @@ static struct mvebu_mpp_mode mv98dx3236_mpp_modes[] = { MPP_VAR_FUNCTION(0x1, "i2c0", "sck", V_98DX3236_PLUS)), MPP_MODE(15, MPP_VAR_FUNCTION(0x0, "gpio", NULL, V_98DX3236_PLUS), - MPP_VAR_FUNCTION(0x4, "i2c0", "sda", V_98DX3236_PLUS)), + MPP_VAR_FUNCTION(0x1, "i2c0", "sda", V_98DX3236_PLUS)), MPP_MODE(16, MPP_VAR_FUNCTION(0x0, "gpo", NULL, V_98DX3236_PLUS), MPP_VAR_FUNCTION(0x4, "dev", "oe", V_98DX3236_PLUS)),
Per the datasheet the i2c functions use MPP_Sel=0x1. They are documented as using MPP_Sel=0x4 as well but mixing 0x1 and 0x4 is clearly wrong. On the board tested 0x4 resulted in a non-functioning i2c bus so stick with 0x1 which works. Fixes: d7ae8f8dee7f ("pinctrl: mvebu: pinctrl driver for 98DX3236 SoC") Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz> Reviewed-by: Andrew Lunn <andrew@lunn.ch> --- Changes in v2: - Add reviewed-by from Andrew drivers/pinctrl/mvebu/pinctrl-armada-xp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)