Re: [U-Boot] persistent logo on LCD on imx6ull

Hi Peng

Ok I have fixed it :)

Michael

On Mon, Jul 2, 2018 at 4:26 PM, Michael Nazzareno Trimarchi michael@amarulasolutions.com wrote:

Hi Peng

I'm working to make persistent the uboot logo on imx6ull platform but I have some problem with the framebuffer. Now this is the main idea

I use this to recalculate allocation

ubi part ubiblock; ubi read ${loadaddr} updater; run load_dtb; fdt addr ${fdt_addr} fdt set /reserved-memory/framebuffer reg "<0x$video_address 0x$video_memory_size>" fdt set /chosen/framebuffer reg "<0x$video_address 0x$video_memory_size>"

In linux I have

•   aliases {
  

•           display0 = &lcdif;
  

•   };
  

•   reserved-memory {
  

•           #address-cells = <1>;
  

•           #size-cells = <1>;
  

•           ranges;
  

•           display_reserved: framebuffer@86fa2000 {
  

•                   reg = <0x86fa2000 0x80000>;
  

•                   no-map;
  

•           };
  

•   };
  

•   chosen {
  

•           #address-cells = <1>;
  

•           #size-cells = <1>;
  

•           ranges;
  

•           stdout-path = "display0";
  

•           framebuffer0: framebuffer@86fa2000 {
  

•                   #clock-cells = <1>;
  

•                   pinctrl-names = "default";
  

•                   pinctrl-0 = <&pinctrl_lcdif>;
  

•                   compatible = "simple-framebuffer";
  

•                   reg = <0x86fa2000 (480 * 272 * 4)>;
  

•                   width = <480>;
  

•                   height = <272>;
  

•                   stride = <(480 * 4)>;
  

•                   format = "a8r8g8b8";
  

•                   clocks = <&clks IMX6UL_CLK_LCDIF_PIX>,
  

•                            <&clks IMX6UL_CLK_LCDIF_APB>;
  

•                   nshut-supply = <&reg_lcd_nshut>;
  

•                   nreset-supply = <&reg_lcd_nreset>;
  

•                   display = <&lcdif>;
  

•           };
  

•   };
  
  

and this in uboot

index 4011066..beddd4a 100644 --- a/drivers/video/cfb_console.c +++ b/drivers/video/cfb_console.c @@ -69,6 +69,7 @@ #include <version.h> #include <malloc.h> #include <video.h> +#include <lcd.h> #include <linux/compiler.h>

#if defined(CONFIG_VIDEO_MXS) @@ -2107,6 +2108,9 @@ static int cfg_video_init(void) video_console_address = video_fb_address; #endif

•   env_set_hex("video_address", (unsigned long)VIDEO_FB_ADRS);
  

•   env_set_hex("video_memory_size", (unsigned long)
  

roundup(VIDEO_SIZE, PAGE_SIZE));

•   /* Initialize the console */
    console_col = 0;
    console_row = 0;
  

diff --git a/drivers/video/mxsfb.c b/drivers/video/mxsfb.c index 4e3e3d7..e2a5c05 100644 --- a/drivers/video/mxsfb.c +++ b/drivers/video/mxsfb.c @@ -7,6 +7,7 @@ #include <common.h> #include <malloc.h> #include <video_fb.h> +#include <lcd.h>

#include <asm/arch/imx-regs.h> #include <asm/arch/clock.h> @@ -214,8 +215,8 @@ void *video_hw_init(void) panel.memSize = mode.xres * mode.yres * panel.gdfBytesPP;

    /* Allocate framebuffer */

•   fb = memalign(ARCH_DMA_MINALIGN,
  

•                 roundup(panel.memSize, ARCH_DMA_MINALIGN));
  

•   fb = memalign(PAGE_SIZE,
  

•                 roundup(panel.memSize, PAGE_SIZE));
    if (!fb) {
            printf("MXSFB: Error allocating framebuffer!\n");
            return NULL;
  
  

I have two problems. (Using the latest uboot and linux)

1. I have a 50uS glitch on gpios so they get down and up again (nshut

and nreset) even I don't touch them 2) Even clock tree is ok pixelclock seems that stops to go out

Do you have any suggestion?

Michael

-- | Michael Nazzareno Trimarchi Amarula Solutions BV | | COO - Founder Cruquiuskade 47 | | +31(0)851119172 Amsterdam 1018 AM NL | | [`as] http://www.amarulasolutions.com |