Hi Stephen,
On 12 May 2016 at 12:11, Stephen Warren swarren@wwwdotorg.org wrote:
From: Stephen Warren swarren@nvidia.com
Tegra186's MMC controller needs to be explicitly identified. Add another compatible value for it.
Tegra186 will use an entirely different clock/reset control mechanism to existing chips, and will use standard clock/reset APIs rather than the existing Tegra-specific custom APIs. The driver support for that isn't ready yet, so simply disable all clock/reset usage if compiling for Tegra186. This must happen at compile time rather than run-time since the custom APIs won't even be compiled in on Tegra186. In the long term, the plan would be to convert the existing custom APIs to standard APIs and get rid of the ifdefs completely.
The system's main eMMC will work without any clock/reset support, since the firmware will have already initialized the controller in order to load U-Boot. Hence the driver is useful even in this apparently crippled state.
Signed-off-by: Stephen Warren swarren@nvidia.com
This patch is needed at compile-time for the upcoming Tegra186 core patches to compile. As such, it's probably best if it gets applied via the Tegra tree.
arch/arm/include/asm/arch-tegra/tegra_mmc.h | 2 ++ drivers/mmc/tegra_mmc.c | 32 ++++++++++++++++++++++++++++- include/fdtdec.h | 1 + lib/fdtdec.c | 1 + 4 files changed, 35 insertions(+), 1 deletion(-)
Can you convert this driver to use CONFIG_DM_MMC and CONFIG_BLK?
Regards, Simon