Squashed 'dts/upstream/' content from commit aaba2d45dc2a
git-subtree-dir: dts/upstream
git-subtree-split: aaba2d45dc2a1b3bbb710f2a3808ee1c9f340abe
diff --git a/include/dt-bindings/pinctrl/dm814x.h b/include/dt-bindings/pinctrl/dm814x.h
new file mode 100644
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--- /dev/null
+++ b/include/dt-bindings/pinctrl/dm814x.h
@@ -0,0 +1,49 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * This header provides constants specific to DM814X pinctrl bindings.
+ */
+
+#ifndef _DT_BINDINGS_PINCTRL_DM814X_H
+#define _DT_BINDINGS_PINCTRL_DM814X_H
+
+#include <dt-bindings/pinctrl/omap.h>
+
+#undef INPUT_EN
+#undef PULL_UP
+#undef PULL_ENA
+
+/*
+ * Note that dm814x silicon revision 2.1 and older require input enabled
+ * (bit 18 set) for all 3.3V I/Os to avoid cumulative hardware damage. For
+ * more info, see errata advisory 2.1.87. We leave bit 18 out of
+ * function-mask in dm814x.h and rely on the bootloader for it.
+ */
+#define INPUT_EN (1 << 18)
+#define PULL_UP (1 << 17)
+#define PULL_DISABLE (1 << 16)
+
+/* update macro depending on INPUT_EN and PULL_ENA */
+#undef PIN_OUTPUT
+#undef PIN_OUTPUT_PULLUP
+#undef PIN_OUTPUT_PULLDOWN
+#undef PIN_INPUT
+#undef PIN_INPUT_PULLUP
+#undef PIN_INPUT_PULLDOWN
+
+#define PIN_OUTPUT (PULL_DISABLE)
+#define PIN_OUTPUT_PULLUP (PULL_UP)
+#define PIN_OUTPUT_PULLDOWN 0
+#define PIN_INPUT (INPUT_EN | PULL_DISABLE)
+#define PIN_INPUT_PULLUP (INPUT_EN | PULL_UP)
+#define PIN_INPUT_PULLDOWN (INPUT_EN)
+
+/* undef non-existing modes */
+#undef PIN_OFF_NONE
+#undef PIN_OFF_OUTPUT_HIGH
+#undef PIN_OFF_OUTPUT_LOW
+#undef PIN_OFF_INPUT_PULLUP
+#undef PIN_OFF_INPUT_PULLDOWN
+#undef PIN_OFF_WAKEUPENABLE
+
+#endif
+