[PATCH v1 2/2] x86: edison: Don't take SD card detect pin into consideration

[Andy Shevchenko]

There are two PCB designs in the wild which use the opposite
signaling for SD card detect. This makes U-Boot working in one case
and failing in the other. Quirk this out by disconnecting SD card
detect pin from the PCB by switching to mode 3.

BugLink: https://github.com/edison-fw/meta-intel-edison/issues/136
Signed-off-by: Andy Shevchenko <andriy.shevchenko at linux.intel.com>
---
 arch/x86/dts/edison.dts | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/arch/x86/dts/edison.dts b/arch/x86/dts/edison.dts
index 2c8cf6c07102..04e8a4e457c8 100644
--- a/arch/x86/dts/edison.dts
+++ b/arch/x86/dts/edison.dts
@@ -94,6 +94,7 @@
 	sdcard: mmc at ff3fa000 {
 		compatible = "intel,sdhci-tangier";
 		reg = <0xff3fa000 0x1000>;
+		cd-inverted;
 	};
 
 	pmu: power at ff00b000 {
@@ -131,6 +132,17 @@
 		compatible = "intel,pinctrl-tangier";
 		reg = <0xff0c0000 0x8000>;
 
+		/*
+		 * Disconnect SD card detect, so it won't affect the reality
+		 * on two different PCB designs where it's using the opposite
+		 * signaling: Edison/Arduino uses Active Low, while SparkFun
+		 * went with Active High.
+		 */
+		sd_cd at 0 {
+			pad-offset = <37>;
+			mode-func = <3>;
+		};
+
 		/*
 		 * Initial configuration came from the firmware.
 		 * Which quite likely has been used in the phones, where I2C #8,
-- 
2.33.0