From: Tim Harvey <tharvey@gateworks.com>
Date: Wed, 19 Jun 2024 21:13:22 +0000 (-0700)
Subject: board: gateworks: venice: delay before reading GSC EEPROM
X-Git-Url: http://git.dujemihanovic.xyz/img/static/%7B%7B%20%28.OutputFormats.Get?a=commitdiff_plain;h=87a4e5b3a41f5b13dd86c8661ee92f58098c10ac;p=u-boot.git

board: gateworks: venice: delay before reading GSC EEPROM

Extensive testing has shown that at higher temperatures operating
without a GSC backup battery, the GSC needs a small delay after
releasing the I2C SDA/SCL pins before it is ready to handle I2C
requests.

Add a delay to avoid errors such as:
wait_for_sr_state: Arbitration lost sr=93 cr=80 state=2020
i2c_init_transfer: failed for chip 0x20 retry=0

Signed-off-by: Tim Harvey <tharvey@gateworks.com>
---

diff --git a/board/gateworks/venice/spl.c b/board/gateworks/venice/spl.c
index 04dc0d66ea..e9cdede621 100644
--- a/board/gateworks/venice/spl.c
+++ b/board/gateworks/venice/spl.c
@@ -302,6 +302,7 @@ void board_init_f(ulong dummy)
 				mdelay(10);
 			}
 			pinctrl_select_state(bus, "default");
+			mdelay(10);
 		}
 	}
 	/* Wait indefiniately until the GSC probes */