Re: [PATCH] configs: OrangePi PC2: Update defaults

["Jernej Škrabec" <jernej.skrabec@gmail.com>]

Dne ponedeljek, 07. junij 2021 ob 19:42:45 CEST je Jernej Skrabec napisal(a):
> OrangePi PC2 board has DRAM with ODT, so enable it. ZQ value is also
> slightly different in vendor images, so update it as well. H5 SoC is
> also connected to voltage regulator. It's default value is pretty low,
> so in order to avoid instability, enable driver for it and set it to
> appropriate voltage.
> 
> Signed-off-by: Jernej Skrabec <jernej.skrabec@gmail.com>
> ---
>  configs/orangepi_pc2_defconfig | 6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)
> 
> diff --git a/configs/orangepi_pc2_defconfig b/configs/orangepi_pc2_defconfig
> index f72ffe27b26c..5e4cca793f53 100644
> --- a/configs/orangepi_pc2_defconfig
> +++ b/configs/orangepi_pc2_defconfig
> @@ -3,13 +3,15 @@ CONFIG_ARCH_SUNXI=y
>  CONFIG_SPL=y
>  CONFIG_MACH_SUN50I_H5=y
>  CONFIG_DRAM_CLK=672
> -CONFIG_DRAM_ZQ=3881977
> -# CONFIG_DRAM_ODT_EN is not set
> +CONFIG_DRAM_ZQ=4145117
>  CONFIG_MACPWR="PD6"
>  CONFIG_SPL_SPI_SUNXI=y
> +CONFIG_SPL_I2C_SUPPORT=y
>  CONFIG_DEFAULT_DEVICE_TREE="sun50i-h5-orangepi-pc2"
>  # CONFIG_SYS_MALLOC_CLEAR_ON_INIT is not set
>  CONFIG_SUN8I_EMAC=y
> +CONFIG_SY8106A_POWER=y
> +CONFIG_SY8106A_VOUT1_VOLT=1100

I'm not sure if voltage regulator adjustment needs to be enabled. By default, 
it's set to 1.1 V using resistor divider. However, it can be still needed if 
board is rebooted and OS set it to lower value before reboot.

Best regards,
Jernej

>  CONFIG_USB_EHCI_HCD=y
>  CONFIG_USB_OHCI_HCD=y
>  CONFIG_USB_MUSB_GADGET=y
> -- 
> 2.31.1
> 
>