Merge branch '2023-11-03-assorted-tegra-improvements'

- Assorted improvements for Tegra platforms

1 files changed, 52 insertions, 0 deletions

diff --git a/drivers/sysreset/sysreset_max77663.c b/drivers/sysreset/sysreset_max77663.c
new file mode 100644
index 00000000000..8febcf8de6c
--- /dev/null
+++ b/drivers/sysreset/sysreset_max77663.c
@@ -0,0 +1,52 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ *  Copyright(C) 2023 Svyatoslav Ryhel <clamor95@gmail.com>
+ */
+
+#include <dm.h>
+#include <i2c.h>
+#include <errno.h>
+#include <sysreset.h>
+#include <power/pmic.h>
+#include <power/max77663.h>
+
+static int max77663_sysreset_request(struct udevice *dev,
+				     enum sysreset_t type)
+{
+	int val;
+
+	val = pmic_reg_read(dev->parent, MAX77663_REG_ONOFF_CFG1);
+	if (val < 0)
+		return val;
+
+	/* clear both bits */
+	val &= ~ONOFF_SFT_RST;
+	val &= ~ONOFF_PWR_OFF;
+
+	switch (type) {
+	case SYSRESET_POWER:
+		/* MAX77663: SFT_RST > ONOFF_CFG1 */
+		pmic_reg_write(dev->parent, MAX77663_REG_ONOFF_CFG1,
+			       val | ONOFF_SFT_RST);
+		break;
+	case SYSRESET_POWER_OFF:
+		/* MAX77663: PWR_OFF > ONOFF_CFG1 */
+		pmic_reg_write(dev->parent, MAX77663_REG_ONOFF_CFG1,
+			       val | ONOFF_PWR_OFF);
+		break;
+	default:
+		return -EPROTONOSUPPORT;
+	}
+
+	return -EINPROGRESS;
+}
+
+static struct sysreset_ops max77663_sysreset = {
+	.request = max77663_sysreset_request,
+};
+
+U_BOOT_DRIVER(sysreset_max77663) = {
+	.id	= UCLASS_SYSRESET,
+	.name	= MAX77663_RST_DRIVER,
+	.ops	= &max77663_sysreset,
+};