From: Dinh Nguyen <dinguyen@xxxxxxxxxx> Hi, This is v2 of the patch series to enable SD/MMC on the SOCFPGA platform. V2 adds a syscon driver to control the system manager registers. V1 of the cover-letter of this patch series appears below: This patch series enables support for the Synopsys SD/MMC driver that is on the Altera SOCFPGA platform. The reason why this series has 4 patches is to implement Arnd's suggestion: http://lists.infradead.org/pipermail/linux-arm-kernel/2013-October/204982.html To summarize Arnd's suggestion: 1. Create a backend syscon driver to control the system manager. 2. Create a clock driver independent of the SOCFPGA clock driver that uses syscon as the low-level interface. 3. Make the sdmmc driver use the normal clock API and link its clock to the driver step 2 in the device tree. The end approach is a bit different because I did not find the need for a syscon driver for the system manager. Since the system manager had already been iomap already in the SOCFPGA platform code, I just reused it in the new clock driver. Patch 1/4: clk: socfpga: Add a clock driver for SOCFPGA's system manager This patch adds a clk-sysmgr driver that can be use by a common clock API to set system manager register bits needed by the SD/MMC driver. The SD/MMC driver can simply call a common clock API to set the required clock phase settings for the SD/MMC CIU. Patch 2/4: arm: dts: Add a system manager compatible property This patch adds a DTS compatible entry for the new clk-sysmgr driver. Patch 3/4: mmc: dw_mmc-socfpga: Clean up SOCFPGA platform specific functionality This patch cleans up dw_mmc-socpfga.c file from defines that are outside of the SD/MMC IP. It makes the common clock API call to set the SD/MMC clock phase settings in the system manager. Patch 4/4: arm: dts: Add support for SD/MMC on SOCFPGA This patch adds the necessary DTS bindings for the SOCFPGA specific extensions to the base Synopsys DW SD/MMC driver. Thanks, Dinh Dinh Nguyen (4): clk: socfpga: Add a clock driver for SOCFPGA's system manager arm: dts: Add a system manager compatible property mmc: dw_mmc-socfpga: Clean up SOCFPGA platform specific functionality arm: dts: Add support for SD/MMC on SOCFPGA .../bindings/arm/altera/socfpga-system.txt | 10 ++ .../devicetree/bindings/mmc/socfpga-dw-mshc.txt | 38 ++++++++ arch/arm/boot/dts/socfpga.dtsi | 23 ++++- arch/arm/boot/dts/socfpga_cyclone5.dts | 12 +++ arch/arm/boot/dts/socfpga_vt.dts | 12 +++ drivers/clk/socfpga/Makefile | 2 +- drivers/clk/socfpga/clk-sysmgr.c | 98 ++++++++++++++++++++ drivers/mmc/host/dw_mmc-socfpga.c | 80 ++-------------- 8 files changed, 202 insertions(+), 73 deletions(-) create mode 100644 Documentation/devicetree/bindings/mmc/socfpga-dw-mshc.txt create mode 100644 drivers/clk/socfpga/clk-sysmgr.c --- CC: Arnd Bergmann <arnd@xxxxxxxx> Cc: Mike Turquette <mturquette@xxxxxxxxxx> CC: Olof Johansson <olof@xxxxxxxxx> Cc: Rob Herring <rob.herring@xxxxxxxxxxx> Cc: Pawel Moll <pawel.moll@xxxxxxx> Cc: Mark Rutland <mark.rutland@xxxxxxx> Cc: Stephen Warren <swarren@xxxxxxxxxxxxx> Cc: Ian Campbell <ian.campbell@xxxxxxxxxx> Cc: Chris Ball <cjb@xxxxxxxxxx> Cc: Jaehoon Chung <jh80.chung@xxxxxxxxxxx> Cc: Seungwon Jeon <tgih.jun@xxxxxxxxxxx> Cc: devicetree@xxxxxxxxxxxxxxx Cc: linux-mmc@xxxxxxxxxxxxxxx CC: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx -- 1.7.9.5 -- 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
