From: Marek Vasut <marek.vasut+renesas@gmail.com>
Date: Fri, 16 Feb 2018 23:35:23 +0000 (+0100)
Subject: ARM: rmobile: Reset ethernet PHY
X-Git-Tag: v2018.03-rc3~9^2~6
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=cd07358c044247c01d14f08307026879e80efb8e;p=platform%2Fkernel%2Fu-boot.git

ARM: rmobile: Reset ethernet PHY

Toggle the PHY reset GPIO to bring the ethernet PHY out of reset properly.

Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
---
NOTE: This should be moved to the SH ethernet driver, but it's quite
      late in the cycle, so this is something to be done in 2018.05.
---

diff --git a/board/renesas/porter/porter.c b/board/renesas/porter/porter.c
index bd0080d..dfefd7f 100644
--- a/board/renesas/porter/porter.c
+++ b/board/renesas/porter/porter.c
@@ -65,11 +65,19 @@ int board_early_init_f(void)
 	return 0;
 }
 
+#define ETHERNET_PHY_RESET	176	/* GPIO 5 22 */
+
 int board_init(void)
 {
 	/* adress of boot parameters */
 	gd->bd->bi_boot_params = CONFIG_SYS_SDRAM_BASE + 0x100;
 
+	/* Force ethernet PHY out of reset */
+	gpio_request(ETHERNET_PHY_RESET, "phy_reset");
+	gpio_direction_output(ETHERNET_PHY_RESET, 0);
+	mdelay(10);
+	gpio_direction_output(ETHERNET_PHY_RESET, 1);
+
 	return 0;
 }