leandrof/u-boot
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

mmc: tegra: support Tegra124

Browse Source 
Tegra124's MMC controller is very similar to earlier SoC generations,
and can be supported by the same driver.

However, there are some non-backwards-compatible HW differences, and
hence a new DT compatible value must be used to describe the HW. This
patch updates the driver to support that new compatible value.

That said, the HW differences are only relevant when enabling certain
high-performance transfer modes. Since the driver is currently very
simple and doesn't enable those modes, we don't actually need to address
any of these HW differences in the code yet, hence the simple nature of
this patch.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Pantelis Antoniou <panto@antoniou-consulting.com>
Tested-by: Thierry Reding <treding@nvidia.com>
Acked-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>
This commit is contained in:
Stephen Warren 2014-01-24 12:46:06 -07:00 committed by Tom Warren
parent b9dd6215ce
commit a73ca4789f
3 changed files with 11 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
drivers/mmc/tegra_mmc.c
View File

@ -668,6 +668,15 @@ void tegra_mmc_init(void)
const void *blob = gd->fdt_blob;
debug("%s entry\n", __func__);
/* See if any Tegra124 MMC controllers are present */
count = fdtdec_find_aliases_for_id(blob, "sdhci",
COMPAT_NVIDIA_TEGRA124_SDMMC, node_list, MAX_HOSTS);
debug("%s: count of Tegra124 sdhci nodes is %d\n", __func__, count);
if (process_nodes(blob, node_list, count)) {
printf("%s: Error processing T30 mmc node(s)!\n", __func__);
return;
}
/* See if any Tegra30 MMC controllers are present */
count = fdtdec_find_aliases_for_id(blob, "sdhci",
COMPAT_NVIDIA_TEGRA30_SDMMC, node_list, MAX_HOSTS);

1
include/fdtdec.h
View File

@ -59,6 +59,7 @@ enum fdt_compat_id {
COMPAT_NVIDIA_TEGRA20_NAND, /* Tegra2 NAND controller */
COMPAT_NVIDIA_TEGRA20_PWM, /* Tegra 2 PWM controller */
COMPAT_NVIDIA_TEGRA20_DC, /* Tegra 2 Display controller */
COMPAT_NVIDIA_TEGRA124_SDMMC, /* Tegra124 SDMMC controller */
COMPAT_NVIDIA_TEGRA30_SDMMC, /* Tegra30 SDMMC controller */
COMPAT_NVIDIA_TEGRA20_SDMMC, /* Tegra20 SDMMC controller */
COMPAT_NVIDIA_TEGRA20_SFLASH, /* Tegra 2 SPI flash controller */

1
lib/fdtdec.c
View File

@ -32,6 +32,7 @@ static const char * const compat_names[COMPAT_COUNT] = {
COMPAT(NVIDIA_TEGRA20_NAND, "nvidia,tegra20-nand"),
COMPAT(NVIDIA_TEGRA20_PWM, "nvidia,tegra20-pwm"),
COMPAT(NVIDIA_TEGRA20_DC, "nvidia,tegra20-dc"),
COMPAT(NVIDIA_TEGRA124_SDMMC, "nvidia,tegra124-sdhci"),
COMPAT(NVIDIA_TEGRA30_SDMMC, "nvidia,tegra30-sdhci"),
COMPAT(NVIDIA_TEGRA20_SDMMC, "nvidia,tegra20-sdhci"),
COMPAT(NVIDIA_TEGRA20_SFLASH, "nvidia,tegra20-sflash"),