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On RK3568 most pins have a configurable drive strength of level 0-5 and
some pins level 0-11. When rk3568_set_drive is called with a strength
value above 7 the drv value written to reg may overflow into the write
enable bits, resulting in a bad configuration.
This cause e.g. ethernet PHY on Radxa CM3-IO board not to work after
drive is configured according to the device tree.
Could not get PHY for ethernet@fe010000: addr 0
Level 6-11 can be configured using a second reg for some pins, however
the drv value is reused resulting in lower 6 bits being written to reg.
Input schmitt is configured in 2-bit fields on RK3568 compared to
earlier generation and 2'b10 should be used to enable input schmitt.
Change to use regmap_update_bits with a rmask to fix the overflow issue
and closer match the linux driver. Bit shift the drv value used for the
second reg to configure drive strength level 6-11. Also write correct
values for input schmitt setting.
Fixes:
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|---|---|---|
| .. | ||
| Kconfig | ||
| Makefile | ||
| pinctrl-px30.c | ||
| pinctrl-rk322x.c | ||
| pinctrl-rk3036.c | ||
| pinctrl-rk3066.c | ||
| pinctrl-rk3128.c | ||
| pinctrl-rk3188.c | ||
| pinctrl-rk3288.c | ||
| pinctrl-rk3308.c | ||
| pinctrl-rk3328.c | ||
| pinctrl-rk3368.c | ||
| pinctrl-rk3399.c | ||
| pinctrl-rk3568.c | ||
| pinctrl-rk3588.c | ||
| pinctrl-rockchip-core.c | ||
| pinctrl-rockchip.h | ||
| pinctrl-rv1108.c | ||
| pinctrl-rv1126.c | ||