Re: [U-Boot] imx6qp wandboard getting stuck in U-Boot

2017-09-27 Thread Fabio Estevam 
On Wed, Sep 27, 2017 at 1:39 PM, Fabio Estevam  wrote:

> Then I am able to boot the kernel fine. Will try to find out what is
> the missing clock for the imx6qp case.

Ok, just sent a v3 that allows me to boot the kernel on a imx6qp wandboard.
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Re: [U-Boot] imx6qp wandboard getting stuck in U-Boot

2017-09-27 Thread Fabio Estevam 
On Wed, Sep 27, 2017 at 1:27 PM, Fabio Estevam  wrote:
> Hi,
>
> With the two attached U-Boot patches plus the dts one I get the
> following on imx6qp wandboard:
>
> U-Boot SPL 2017.09-37395-g28ca7c0-dirty (Sep 27 2017 - 11:04:41)
> Trying to boot from MMC1
>
>
> U-Boot 2017.09-37395-g28ca7c0-dirty (Sep 27 2017 - 11:04:41 -0300)
>
> CPU:   Freescale i.MX6QP rev1.0 at 792 MHz
> Reset cause: POR
> I2C:   ready
> DRAM:  2 GiB
> PMIC:  PFUZE100 ID=0x10
> MMC:   FSL_SDHC: 0, FSL_SDHC: 1
> No panel detected: default to HDMI
> Display: HDMI (1024x768)
> In:serial
> Out:   serial
> Err:   serial
> Board: Wandboard rev D1
> Net:   FEC [PRIME]
> Hit any key to stop autoboot:  0
> switch to partitions #0, OK
> mmc0 is current device
> Scanning mmc 0:1...
> Found U-Boot script /boot/boot.scr
> 336 bytes read in 69 ms (3.9 KiB/s)
> ## Executing script at 1200
> 38550 bytes read in 83 ms (453.1 KiB/s)
> 6378872 bytes read in 367 ms (16.6 MiB/s)
> ## Flattened Device Tree blob at 1800
>Booting using the fdt blob at 0x1800
>Using Device Tree in place at 1800, end 1800c695
> (Hangs here)

Looks like a clock issue. If I do this change:

--- a/board/wandboard/spl.c
+++ b/board/wandboard/spl.c
@@ -258,13 +258,13 @@ static void ccgr_init(void)
 {
struct mxc_ccm_reg *ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;

-   writel(0x00C03F3F, >CCGR0);
-   writel(0x0030FC03, >CCGR1);
-   writel(0x0FFFC000, >CCGR2);
-   writel(0x3FF0, >CCGR3);
-   writel(0x00FFF300, >CCGR4);
-   writel(0x0FC3, >CCGR5);
-   writel(0x03FF, >CCGR6);
+   writel(0x, >CCGR0);
+   writel(0x, >CCGR1);
+   writel(0x, >CCGR2);
+   writel(0x, >CCGR3);
+   writel(0x, >CCGR4);
+   writel(0x, >CCGR5);
+   writel(0x, >CCGR6);
 }

Then I am able to boot the kernel fine. Will try to find out what is
the missing clock for the imx6qp case.
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