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 <hs@denx.de>

diff --git a/board/aristainetos/aristainetos-v2.c b/board/aristainetos/aristainetos-v2.c
index 49dbd2e..fa4b4d2 100644 (file)
--- 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;
 }