From 24542528fe5832a11b553c5c408a3c41bc4fec21 Mon Sep 17 00:00:00 2001 From: =?utf8?q?=C5=81ukasz=20Majewski?= Date: Wed, 9 Apr 2014 15:09:44 +0200 Subject: [PATCH] arm:board:trats2:FIX: Clear INFORM4 and INFORM5 registers at correct boot During switch to device tree, commit 1ecab0f has removed this code. INFORM4 and INFORM5 registers are used by TRATS2 first stage bootloader for providing recovery. For normal operation, those two must be cleared out. This error emerges when one force reset from u-boot's command line for three times. Signed-off-by: Lukasz Majewski Cc: Minkyu Kang Acked-by: Minkyu Kang --- board/samsung/trats2/trats2.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/board/samsung/trats2/trats2.c b/board/samsung/trats2/trats2.c index 2a6c9f9170..f558ef97a9 100644 --- a/board/samsung/trats2/trats2.c +++ b/board/samsung/trats2/trats2.c @@ -150,9 +150,22 @@ static int pmic_init_max77686(void); int exynos_init(void) { + struct exynos4_power *pwr = + (struct exynos4_power *)samsung_get_base_power(); + check_hw_revision(); printf("HW Revision:\t0x%04x\n", board_rev); + /* + * First bootloader on the TRATS2 platform uses + * INFORM4 and INFORM5 registers for recovery + * + * To indicate correct boot chain - those two + * registers must be cleared out + */ + writel(0, &pwr->inform4); + writel(0, &pwr->inform5); + return 0; } -- 2.39.5