[PATCH 1/2] ARM: dts: kirkwood: lsxl: fix serial line

Andrew Lunn andrew at lunn.ch
Thu Aug 18 17:28:34 PDT 2022


On Tue, Aug 16, 2022 at 02:10:24AM +0200, Michael Walle wrote:
> Commit 327e15428977 ("ARM: dts: kirkwood: consolidate common pinctrl
> settings") unknowingly broke the serial output on this board. Before
> this commit, the pinmux was still configured by the bootloader and the
> kernel didn't reconfigured it again. This was an oversight by the
> initial board support where the pinmux for the serial line was never
> configured by the kernel. But with this commit, the serial line will be
> reconfigured to the wrong pins. This is especially confusing, because
> the output still works, but the input doesn't. Presumingly, the input is
> reconfigured to MPP10, but the output is connected to both MPP11 and
> MPP5.
> 
> Override the pinmux in the board device tree.
> 
> Fixes: 327e15428977 ("ARM: dts: kirkwood: consolidate common pinctrl settings")
> Signed-off-by: Michael Walle <michael at walle.cc>

Reviewed-by: Andrew Lunn <andrew at lunn.ch>

    Andrew



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