The pcie supply design is (rk3566 evb2 example)
DC12V
-> VCC12V_PCIE(controlled by GPIO0_C2_H)
-> VCC3V3_PCIE(controlled by GPIO0_C2_H)
-> VCC5V0_SYS
-> VCC3V3_PI6C(controlled by GPIO0_C2_H)
The pci phy driver only want to enable or disable the VCC3V3_PCIE power.
Suggested from pcie owner to ignore the VCC12V_PCIE and VCC3V3_PI6C, so
the dts only need to add regulator node for VCC3V3_PCIE.
Most of time we keep the regulator name same as the hardware design, so
the dts node is
vcc3v3_pcie: gpio-regulator {
compatible = "regulator-fixed";
regulator-name = "vcc3v3_pcie";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
enable-active-high;
gpio = <&gpio0 RK_PB7 GPIO_ACTIVE_HIGH>;
vin-supply = <&dc_12v>;
};
The regulator type is "regulator-fixed" since its voltage always be
3.3v, min and max should be 3300000 make the regulator has a voltage
value.
The regulator can be enabled or disabled by regulator_enable or
regulator_disable function, so make the GPIO0_B7 as "ena_pin" for the
regulator.
The regulator is supplied by DCIN_12V, so add the vin-supply.
Some boards need a delay before enabling trainning for power to be
stable from the measurement.
By measurement, 5ms is enough for power and refclk to be stable.
Change-Id: Iaf70abe9c9e06504af067dc0e3d60b775557c026
Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com>
supports-* stuff were used for rockchip platforms to speed up booting
if we know what exactly the host was used for. As we have upstreamed all
these with some very similar ways, now it's the time we migrate our dts
files to use new properties.
They were converted by:
sed -i "s/supports-emmc;/no-sdio;\n\tno-sd;/g" `grep supports-emmc -rl arch/*`
sed -i "s/supports-sd;/no-sdio;\n\tno-mmc;/g" `grep supports-sd -rl arch/*`
sed -i "s/supports-sdio;/no-sd;\n\tno-mmc;/g" `grep supports-sdio -rl arch/*`
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Change-Id: I33e5317ee5c7305803cf18ff4a370658abf555b0
Jianqun Xu