diff options
Diffstat (limited to 'arch/arm64')
| -rw-r--r-- | arch/arm64/boot/dts/freescale/imx8mq.dtsi | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/arch/arm64/boot/dts/freescale/imx8mq.dtsi b/arch/arm64/boot/dts/freescale/imx8mq.dtsi index 0235967d1a2e..253d6d66af1a 100644 --- a/arch/arm64/boot/dts/freescale/imx8mq.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mq.dtsi @@ -472,9 +472,25 @@ reg = <IMX8M_POWER_DOMAIN_MIPI>; }; - pgc_pcie1: power-domain@1 { + /* + * As per comment in ATF source code: + * + * PCIE1 and PCIE2 share the + * same reset signal, if we + * power down PCIE2, PCIE1 + * will be held in reset too. + * + * So instead of creating two + * separate power domains for + * PCIE1 and PCIE2 we create a + * link between both and use + * it as a shared PCIE power + * domain. + */ + pgc_pcie: power-domain@1 { #power-domain-cells = <0>; reg = <IMX8M_POWER_DOMAIN_PCIE1>; + power-domains = <&pgc_pcie2>; }; pgc_otg1: power-domain@2 { |