[RFC 1/2] ARM: dts: imx6qp-sabresd: Enable pcie support

Richard Zhu hongxing.zhu at nxp.com
Tue Feb 8 23:02:35 PST 2022


In the i.MX6QP sabresd board(sch-28857) design, one external oscillator
is used as the PCIe reference clock source by the endpoint device.

If RC uses this oscillator as reference clock too, PLL6(ENET PLL) would
has to be in bypass mode, and ENET clocks would be messed up.

To keep things simple, let RC use the internal PLL as reference clock
and always enable the external oscillator for endpoint device on
i.MX6QP sabresd board.

Signed-off-by: Richard Zhu <hongxing.zhu at nxp.com>
---
 arch/arm/boot/dts/imx6qp-sabresd.dts | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/imx6qp-sabresd.dts b/arch/arm/boot/dts/imx6qp-sabresd.dts
index 480e73183f6b..083cf90bcab5 100644
--- a/arch/arm/boot/dts/imx6qp-sabresd.dts
+++ b/arch/arm/boot/dts/imx6qp-sabresd.dts
@@ -50,8 +50,14 @@ MX6QDL_PAD_SD3_DAT7__SD3_DATA7		0x17059
 	};
 };
 
+&vgen3_reg {
+	regulator-min-microvolt = <1800000>;
+	regulator-max-microvolt = <3300000>;
+	regulator-always-on;
+};
+
 &pcie {
-	status = "disabled";
+	status = "okay";
 };
 
 &sata {
-- 
2.25.1




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