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

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

Dne sobota, 12. junij 2021 ob 07:50:27 CEST je Jernej Škrabec napisal(a):
> 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

I re-checked BSP DT and original ZQ value is correct. So this patch should 
only enable ODT, which is really enabled in BSP and DRAM ICs support it.

Best regards,
Jernej

> >  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
> > 
> > 
> 
> 
>