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pinctrl: mpfs-mssio: fix width of unused bank voltage setting

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The bank voltages are only 4 bits wide, so when a pin was unused the
driver was not correctly interpreting it as being at zero volts, because
the driver's value for unused had two extra set bits.

CC: stable@vger.kernel.org
Fixes: 488d704ed7 ("pinctrl: add polarfire soc mssio pinctrl driver")
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: Linus Walleij <linusw@kernel.org>
This commit is contained in:
Conor Dooley 2026-08-31 11:50:58 +01:00 committed by Linus Walleij
parent 51ae996594
commit e6c5d6c589
1 changed files with 1 additions and 1 deletions
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drivers/pinctrl/microchip/pinctrl-mpfs-mssio.c
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@ -86,7 +86,7 @@ static struct mpfs_pinctrl_bank_voltage mpfs_pinctrl_bank_voltages[8] = {
{ .uv = 1800000, .val = 4 },
{ .uv = 2500000, .val = 6 },
{ .uv = 3300000, .val = 8 },
{ .uv = 0, .val = 0x3f }, // pin unused
{ .uv = 0, .val = 0xf }, // pin unused
};
static int mpfs_pinctrl_get_drive_strength_ma(u32 drive_strength)