From: Hai Pham <hai.pham.ud@renesas.com>
Date: Mon, 27 Feb 2023 23:02:19 +0000 (+0100)
Subject: ARM: renesas: falcon: Enable RWDT reset for V3U Falcon
X-Git-Url: http://git.dujemihanovic.xyz/%22/img/sics.gif/%22/static/git-favicon.png?a=commitdiff_plain;h=33c3ec22d4d96336d4c0ad9f5e8183a3f3680bfd;p=u-boot.git

ARM: renesas: falcon: Enable RWDT reset for V3U Falcon

Enable RWDT reset on Reset Controller so that it can be used as
reset trigger source for V3U Falcon.

Reviewed-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Signed-off-by: Hai Pham <hai.pham.ud@renesas.com>
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org> # Use one current_el() in board_init
---

diff --git a/board/renesas/falcon/falcon.c b/board/renesas/falcon/falcon.c
index b7e7fd9003..ab7464d0ee 100644
--- a/board/renesas/falcon/falcon.c
+++ b/board/renesas/falcon/falcon.c
@@ -83,21 +83,27 @@ int board_early_init_f(void)
 	return 0;
 }
 
+#define RST_BASE	0xE6160000 /* Domain0 */
+#define RST_SRESCR0	(RST_BASE + 0x18)
+#define RST_SPRES	0x5AA58000
+#define RST_WDTRSTCR	(RST_BASE + 0x10)
+#define RST_RWDT	0xA55A8002
+
 int board_init(void)
 {
 	/* address of boot parameters */
 	gd->bd->bi_boot_params = CONFIG_TEXT_BASE + 0x50000;
 
-	if (current_el() == 3)
+	if (current_el() == 3) {
 		init_gic_v3();
 
+		/* Enable RWDT reset */
+		writel(RST_RWDT, RST_WDTRSTCR);
+	}
+
 	return 0;
 }
 
-#define RST_BASE	0xE6160000 /* Domain0 */
-#define RST_SRESCR0	(RST_BASE + 0x18)
-#define RST_SPRES	0x5AA58000
-
 void reset_cpu(void)
 {
 	writel(RST_SPRES, RST_SRESCR0);