From c39fcad7806f18763e2cb4d244863ccd024540c0 Mon Sep 17 00:00:00 2001 From: Heiko Schocher Date: Fri, 25 Sep 2015 12:31:49 +0200 Subject: [PATCH] arm, imx6, aristainetos2: set gpr register after reset setting the gpr 1,8 and 12 registers to a fix value. This is needed because after a WDT reset, this registers are not correct resettet, and prevent linux from booting again. Signed-off-by: Heiko Schocher --- board/aristainetos/aristainetos-v2.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/board/aristainetos/aristainetos-v2.c b/board/aristainetos/aristainetos-v2.c index 49dbd2e497..fa4b4d2c15 100644 --- a/board/aristainetos/aristainetos-v2.c +++ b/board/aristainetos/aristainetos-v2.c @@ -580,6 +580,21 @@ static void setup_iomux_gpio(void) imx_iomux_v3_setup_multiple_pads(gpio_pads, ARRAY_SIZE(gpio_pads)); } +static void set_gpr_register(void) +{ + struct iomuxc *iomuxc_regs = (struct iomuxc *)IOMUXC_BASE_ADDR; + + writel(IOMUXC_GPR1_APP_CLK_REQ_N | IOMUXC_GPR1_PCIE_RDY_L23 | + IOMUXC_GPR1_EXC_MON_SLVE | + (2 << IOMUXC_GPR1_ADDRS0_OFFSET) | + IOMUXC_GPR1_ACT_CS0, + &iomuxc_regs->gpr[1]); + writel(0x0, &iomuxc_regs->gpr[8]); + writel(IOMUXC_GPR12_ARMP_IPG_CLK_EN | IOMUXC_GPR12_ARMP_AHB_CLK_EN | + IOMUXC_GPR12_ARMP_ATB_CLK_EN | IOMUXC_GPR12_ARMP_APB_CLK_EN, + &iomuxc_regs->gpr[12]); +} + int board_early_init_f(void) { setup_iomux_uart(); @@ -588,6 +603,7 @@ int board_early_init_f(void) gpio_direction_output(SOFT_RESET_GPIO, 1); gpio_direction_output(SD2_DRIVER_ENABLE, 1); setup_display(); + set_gpr_register(); return 0; } -- 2.39.5