diff options
Diffstat (limited to 'drivers/pinctrl')
| -rw-r--r-- | drivers/pinctrl/rockchip/pinctrl_rk3288.c | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/drivers/pinctrl/rockchip/pinctrl_rk3288.c b/drivers/pinctrl/rockchip/pinctrl_rk3288.c index ae8a4f1fde..03222647ca 100644 --- a/drivers/pinctrl/rockchip/pinctrl_rk3288.c +++ b/drivers/pinctrl/rockchip/pinctrl_rk3288.c @@ -588,6 +588,7 @@ static int rk3288_pinctrl_set_pins(struct udevice *dev, int banknum, int index, struct rk3288_pinctrl_priv *priv = dev_get_priv(dev); uint shift, ind = index; uint mask; + uint value; u32 *addr; int ret; @@ -596,7 +597,18 @@ static int rk3288_pinctrl_set_pins(struct udevice *dev, int banknum, int index, &mask); if (ret) return ret; - rk_clrsetreg(addr, mask << shift, muxval << shift); + + /* + * PMU_GPIO0 registers cannot be selectively written so we cannot use + * rk_clrsetreg() here. However, the upper 16 bits are reserved and + * are ignored when written, so we can use the same code as for the + * other GPIO banks providing that we preserve the value of the other + * bits. + */ + value = readl(addr); + value &= ~(mask << shift); + value |= (mask << (shift + 16)) | (muxval << shift); + writel(value, addr); /* Handle pullup/pulldown */ if (flags) { @@ -614,7 +626,12 @@ static int rk3288_pinctrl_set_pins(struct udevice *dev, int banknum, int index, addr = &priv->grf->gpio1_p[banknum - 1][ind]; debug("%s: addr=%p, val=%x, shift=%x\n", __func__, addr, val, shift); - rk_clrsetreg(addr, 3 << shift, val << shift); + + /* As above, rk_clrsetreg() cannot be used here. */ + value = readl(addr); + value &= ~(mask << shift); + value |= (3 << (shift + 16)) | (val << shift); + writel(value, addr); } return 0; |