pinctrl: meson: Fix wrong shift value when get drive-strength

In meson_pinconf_get_drive_strength, variable bit is calculated by meson_calc_reg_and_bit, this value is the offset from the first pin of a certain bank to current pin, while Meson SoCs use two bits for each pin to depict drive-strength. So a left shift by 1 should be done or node pinconf-pins shows wrong message. Fixes: 6ea3e3b ("pinctrl: meson: add support of drive-strength-microamp") Signed-off-by: Qianggui Song <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Linus Walleij <[email protected]>
mrcsosa · Jan 7, 2020 · 35c60be · 35c60be
1 parent f7e36e1
commit 35c60be
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/drivers/pinctrl/meson/pinctrl-meson.c b/drivers/pinctrl/meson/pinctrl-meson.c
@@ -441,6 +441,7 @@ static int meson_pinconf_get_drive_strength(struct meson_pinctrl *pc,
 		return ret;
 
 	meson_calc_reg_and_bit(bank, pin, REG_DS, &reg, &bit);
+	bit = bit << 1;
 
 	ret = regmap_read(pc->reg_ds, reg, &val);
 	if (ret)