On Tuesday 05 February 2013 08:31:03 Tom Warren wrote:
Marc,
On Tue, Feb 5, 2013 at 2:28 AM, Marc Dietrich marvin24@gmx.de wrote:
[...]
diff --git a/board/compal/paz00/paz00.c b/board/compal/paz00/paz00.c index 1447f47..5cee91a 100644 --- a/board/compal/paz00/paz00.c +++ b/board/compal/paz00/paz00.c @@ -55,18 +55,18 @@ static void pin_mux_mmc(void)
/* this is a weak define that we are overriding */ int board_mmc_init(bd_t *bd) {
debug("board_mmc_init called\n");
debug("%s called\n", __func__); /* Enable muxes, etc. for SDMMC controllers */ pin_mux_mmc();
debug("board_mmc_init: init eMMC\n");/* init dev 0, eMMC chip, with 8-bit bus */tegra_mmc_init(0, 8, -1, -1);
debug("%s: init eMMC\n", __func__);/* init dev 0, eMMC chip */tegra_mmc_init(0);This looks wrong because the sd is on sdmmc0
debug("board_mmc_init: init SD slot\n");/* init dev 3, SD slot, with 4-bit bus */tegra_mmc_init(3, 4, GPIO_PV1, GPIO_PV5);
debug("%s: init SD slot\n", __func__);/* init dev 3, SD slot */tegra_mmc_init(3);and the emmc on sdmmc3. The DTS is correct.
Not your fault as it seems to be wrong in the original code already. I guess it didn't made large difference but may in the future. I wonder how to test this though.
Marc
OK, so just the comments are wrong in paz00.c - I can fix that if I have to do a V2 patchset, or when I apply the patches to u-boot-tegra.
ah no, this is weird!
index 3 maps to sdmmc1 index 2 maps to sdmmc2 index 1 maps to sdmmc3 index 0 maps to sdmmc4
so all is fine, nearly ...
As to testing, just stop at the command prompt and select each device (mmc dev 0, etc.) and run mmcinfo. You should be able to tell from the data displayed whether you are on an SD-card or eMMC chip. You can also eject the SD-card and you should get a warning about card presence due to the CD GPIO.
the sd card is not detected because:
TEGRA20 Board: Compal Paz00 DRAM: 512 MiB MMC: tegra_get_setup: dev_index = 0 tegra_get_setup: count of nodes is 2 tegra_get_setup: found controller at c8000600, width = 8, periph_id = 15 tegra_mmc_init: index 0, bus width 8 pwr_gpio -1 cd_gpio -1 tegra_mmc_init: bus width = 8 tegra_get_setup: dev_index = 3 tegra_get_setup: count of nodes is 2 tegra_get_setup: device index 3 exceeds node count (2)!
If I understand correctly, you are counting the aliases only, not the controllers..., so index 3 (the sdcard) is not initialized at all. Arrr, debugging stole all of my time, but I guess this needs fixing.
Marc