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-rw-r--r--arch/x86/dts/conga-qeval20-qa3-e3845.dts15
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/x86/dts/conga-qeval20-qa3-e3845.dts b/arch/x86/dts/conga-qeval20-qa3-e3845.dts
index 1e14c8b83b..fba089d666 100644
--- a/arch/x86/dts/conga-qeval20-qa3-e3845.dts
+++ b/arch/x86/dts/conga-qeval20-qa3-e3845.dts
@@ -31,6 +31,21 @@
pch_pinctrl {
compatible = "intel,x86-pinctrl";
reg = <0 0>;
+
+ /*
+ * As of today, the latest version FSP (gold4) for BayTrail
+ * misses the PAD configuration of the SD controller's Card
+ * Detect signal. The default PAD value for the CD pin sets
+ * the pin to work in GPIO mode, which causes card detect
+ * status cannot be reflected by the Present State register
+ * in the SD controller (bit 16 & bit 18 are always zero).
+ *
+ * Configure this pin to function 1 (SD controller).
+ */
+ sdmmc3_cd@0 {
+ pad-offset = <0x3a0>;
+ mode-func = <1>;
+ };
};
chosen {
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