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-rw-r--r--arch/arm/boot/dts/omap3-beagle-ab4.dts47
1 files changed, 47 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/omap3-beagle-ab4.dts b/arch/arm/boot/dts/omap3-beagle-ab4.dts
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index 000000000..990ff2d84
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+++ b/arch/arm/boot/dts/omap3-beagle-ab4.dts
@@ -0,0 +1,47 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/dts-v1/;
+
+#include "omap3-beagle.dts"
+
+/ {
+ model = "TI OMAP3 BeagleBoard A to B4";
+ compatible = "ti,omap3-beagle-ab4", "ti,omap3-beagle", "ti,omap3430", "ti,omap3";
+};
+
+/*
+ * Workaround for capacitor C70 issue, see "Boards revision A and < B5"
+ * section at https://elinux.org/BeagleBoard_Community
+ */
+
+/* Unusable as clocksource because of unreliable oscillator */
+&counter32k {
+ status = "disabled";
+};
+
+/* Unusable as clockevent because of unreliable oscillator, allow to idle */
+&timer1_target {
+ /delete-property/ti,no-reset-on-init;
+ /delete-property/ti,no-idle;
+ timer@0 {
+ /delete-property/ti,timer-alwon;
+ };
+};
+
+/* Preferred always-on timer for clocksource */
+&timer12_target {
+ ti,no-reset-on-init;
+ ti,no-idle;
+ timer@0 {
+ /* Always clocked by secure_32k_fck */
+ };
+};
+
+/* Preferred timer for clockevent */
+&timer2_target {
+ ti,no-reset-on-init;
+ ti,no-idle;
+ timer@0 {
+ assigned-clocks = <&gpt2_fck>;
+ assigned-clock-parents = <&sys_ck>;
+ };
+};