[PATCH v2 13/20] ARM: k3: limit eMMC frequency to 26MHz

[Sascha Hauer <s.hauer@pengutronix.de>]

The eMMCs on am625 currently only work reliably with 26MHz. Until this
issue is sorted out limit them to 26MHz on the affected boards
(beagleplay and am625-sk).

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 arch/arm/dts/k3-am625-beagleplay.dts | 4 ++++
 arch/arm/dts/k3-am625-sk.dts         | 4 ++++
 2 files changed, 8 insertions(+)

diff --git a/arch/arm/dts/k3-am625-beagleplay.dts b/arch/arm/dts/k3-am625-beagleplay.dts
index 60340ab8ca..73ac950414 100644
--- a/arch/arm/dts/k3-am625-beagleplay.dts
+++ b/arch/arm/dts/k3-am625-beagleplay.dts
@@ -29,3 +29,7 @@ AM62X_IOPAD(0x0224, PIN_INPUT, 0) /* (D22) MMC1_DAT3 */
 		AM62X_IOPAD(0x0240, PIN_INPUT, 0) /* (D17) MMC1_SDCD */
 	>;
 };
+
+&sdhci0 {
+	max-frequency = <26000000>;
+};
diff --git a/arch/arm/dts/k3-am625-sk.dts b/arch/arm/dts/k3-am625-sk.dts
index 1982c34388..56d5681519 100644
--- a/arch/arm/dts/k3-am625-sk.dts
+++ b/arch/arm/dts/k3-am625-sk.dts
@@ -7,3 +7,7 @@
  * DRAM size differs between board variants. Real size is read from DDRSS
  */
 /delete-node/ &{/memory@80000000};
+
+&sdhci0 {
+	max-frequency = <26000000>;
+};

-- 
2.39.5