Hi,
Op 15-10-2021 om 19:11 schreef 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.
Tested-by: Ferry Toth <ft...@exalondelft.nl> @ Intel Edison-Arduino board
BugLink: https://github.com/edison-fw/meta-intel-edison/issues/136
Signed-off-by: Andy Shevchenko <andriy.shevche...@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@ff3fa000 {
compatible = "intel,sdhci-tangier";
reg = <0xff3fa000 0x1000>;
+ cd-inverted;
};
pmu: power@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@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,
