From mboxrd@z Thu Jan 1 00:00:00 1970 From: l.stach@pengutronix.de (Lucas Stach) Date: Fri, 18 Jul 2014 20:14:30 +0200 Subject: [PATCH] ARM: dts: imx6qdl-sabresd: add always on pcie regulator Message-ID: <1405707270-22901-1-git-send-email-l.stach@pengutronix.de> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Everything in the PCI specification assumes devices to be enumerable on startup. This is only possible if they have power available. A future improvement may allow this regulator to be switched off for D3hot and D3cold power states, but there is a lot of work to do the pcie host controller side for this to work. To keep things simple always enable the regulator for now. Signed-off-by: Lucas Stach --- arch/arm/boot/dts/imx6qdl-sabresd.dtsi | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/arch/arm/boot/dts/imx6qdl-sabresd.dtsi b/arch/arm/boot/dts/imx6qdl-sabresd.dtsi index ec43dde78525..bbbd501098e6 100644 --- a/arch/arm/boot/dts/imx6qdl-sabresd.dtsi +++ b/arch/arm/boot/dts/imx6qdl-sabresd.dtsi @@ -54,6 +54,17 @@ gpio = <&gpio4 10 0>; enable-active-high; }; + + reg_pcie: regulator at 3 { + compatible = "regulator-fixed"; + reg = <3>; + regulator-name = "pcie-supply"; + regulator-min-microvolt = <3300000>; + regulator-max-microvolt = <3300000>; + gpio = <&gpio3 19 0>; + regulator-always-on; + enable-active-high; + }; }; gpio-keys { @@ -323,6 +334,7 @@ MX6QDL_PAD_ENET_TXD1__GPIO1_IO29 0x80000000 MX6QDL_PAD_EIM_D22__GPIO3_IO22 0x80000000 MX6QDL_PAD_ENET_CRS_DV__GPIO1_IO25 0x80000000 + MX6QDL_PAD_EIM_D19__GPIO3_IO19 0x80000000 >; }; -- 2.0.1