diff options
| author | Icenowy Zheng <icenowy@aosc.io> | 2019-04-24 13:44:12 +0800 |
|---|---|---|
| committer | Jagan Teki <jagan@amarulasolutions.com> | 2019-10-25 14:40:34 +0530 |
| commit | 5f19c9302133cda54d5d1a6b1caa400260de9192 (patch) | |
| tree | 76716ec425a71facdc1f4b84589e97ee457e16de /arch/arm/include/asm/arch-sunxi | |
| parent | cf05b4b86c60b1083661d8eddb024172923479f1 (diff) | |
sunxi: set PIO voltage to hardware-detected value on startup on H6
The Allwinner H6 SoC has a register to set the PIO banks' voltage. When
it mismatches the real voltage supplied to the VCC to the PIO supply,
the PIO will work improperly.
The PIO controller also has a register that contains the status of each
VCC rail of the PIO supplies, and it has the same definition with the
configuration register. so we can just copy the content of this register
to the configuration register at startup, to ensure the configuration is
correct at startup stage.
Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
[jagan: s/__maybe__unused/__maybe_unused]
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Acked-by: Jagan Teki <jagan@amarulasolutions.com>
Diffstat (limited to 'arch/arm/include/asm/arch-sunxi')
| -rw-r--r-- | arch/arm/include/asm/arch-sunxi/gpio.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/arm/include/asm/arch-sunxi/gpio.h b/arch/arm/include/asm/arch-sunxi/gpio.h index 40a3f845d04..a646ea6a3ce 100644 --- a/arch/arm/include/asm/arch-sunxi/gpio.h +++ b/arch/arm/include/asm/arch-sunxi/gpio.h @@ -73,6 +73,9 @@ struct sunxi_gpio_reg { struct sunxi_gpio_int gpio_int; }; +#define SUN50I_H6_GPIO_POW_MOD_SEL 0x340 +#define SUN50I_H6_GPIO_POW_MOD_VAL 0x348 + #define BANK_TO_GPIO(bank) (((bank) < SUNXI_GPIO_L) ? \ &((struct sunxi_gpio_reg *)SUNXI_PIO_BASE)->gpio_bank[bank] : \ &((struct sunxi_gpio_reg *)SUNXI_R_PIO_BASE)->gpio_bank[(bank) - SUNXI_GPIO_L]) |