Hi everyone, This series adds support for the MMC controllers on the A83T. The A83T's MMC controller adds what they call the "new timing mode". It moves the MMC clock delay lines into the controller itself. There are some minor changes to how the clock rate is calculated. The new mode give better performance and stability for eMMC applications. This mode is only found on the eMMC facing controller (or MMC2 on this chip). This mode is also found on the A64, but on that chip, the controller is fixed to that mode. On the A83t, the user is free to use the old or new mode, but the new mode is recommended. There are two switches, one in the clock controller, the other in the MMC controller, that must be set in tandem. The main part of this series adds custom functions to the sunxi-ng clk driver, allowing the MMC driver to query and configure the mode. The MMC driver can then support timing mode switching, and thus, the MMC2 controller on the A83t. The other bits are some related cleanups, and the usual device tree changes. The first patch, while largely unrelated, converts the raw clock indices used in the A83t device tree to properly named macros. This should be applied for 4.13, before any other device tree additions that reference the CCU clocks. So it is included in this series. Please have a look. Regards ChenYu Chen-Yu Tsai (11): ARM: dts: sun8i: a83t: Switch to CCU device tree binding macros clk: sunxi-ng: Add interface to query or configure MMC timing modes. clk: sunxi-ng: a83t: Support new timing mode for mmc2 clock mmc: sunxi: Keep default timing phase settings for new timing mode mmc: sunxi: Support controllers that can use both old and new timings mmc: sunxi: Support MMC DDR52 transfer mode with new timing mode mmc: sunxi: Add support for A83T eMMC (MMC2) ARM: dts: sun8i: a83t: Add MMC controller device nodes ARM: dts: sun8i: a83t: Add pingroup for 8-bit eMMC on mmc2 ARM: dts: sun8i: a83t: cubietruck-plus: Enable micro-SD card and eMMC ARM: dts: sun8i: a83t: h8homlet: Enable micro-SD card and onboard eMMC .../devicetree/bindings/mmc/sunxi-mmc.txt | 1 + .../boot/dts/sun8i-a83t-allwinner-h8homlet-v2.dts | 21 ++++++ arch/arm/boot/dts/sun8i-a83t-cubietruck-plus.dts | 27 +++++++ arch/arm/boot/dts/sun8i-a83t.dtsi | 82 ++++++++++++++++++++-- drivers/clk/sunxi-ng/Makefile | 1 + drivers/clk/sunxi-ng/ccu-sun8i-a83t.c | 38 +++++++--- drivers/clk/sunxi-ng/ccu_common.h | 2 + drivers/clk/sunxi-ng/ccu_mmc_timing.c | 73 +++++++++++++++++++ drivers/mmc/host/sunxi-mmc.c | 78 +++++++++++++++----- include/linux/clk/sunxi-ng.h | 20 ++++++ 10 files changed, 311 insertions(+), 32 deletions(-) create mode 100644 drivers/clk/sunxi-ng/ccu_mmc_timing.c create mode 100644 include/linux/clk/sunxi-ng.h -- 2.13.2 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
