From 7b43da4cfdd5e88157fe83a07cc49919080d3205 Mon Sep 17 00:00:00 2001 From: "Manjunathappa, Prakash" Date: Thu, 28 Mar 2013 18:42:00 +0530 Subject: mmc: davinci_mmc: add DT support Adds device tree support for davinci_mmc. Also add binding documentation. As of now tested for non-dma PIO mode and without GPIO card_detect/ write_protect option because of dependencies on EDMA and GPIO module DT support. Signed-off-by: Manjunathappa, Prakash Reviewed-by: Mark Rutland Tested-by: Sekhar Nori Cc: linux-mmc@vger.kernel.org Cc: linux-arm-kernel@lists.infradead.org Cc: davinci-linux-open-source@linux.davincidsp.com Cc: devicetree-discuss@lists.ozlabs.org Cc: cjb@laptop.org Cc: Sekhar Nori Cc: mporter@ti.com Cc: Arnd Bergmann Acked-by: Arnd Bergmann Acked-by: Chris Ball Signed-off-by: Sekhar Nori --- .../devicetree/bindings/mmc/davinci_mmc.txt | 33 ++++++++++++++++++++++ 1 file changed, 33 insertions(+) create mode 100644 Documentation/devicetree/bindings/mmc/davinci_mmc.txt (limited to 'Documentation/devicetree') diff --git a/Documentation/devicetree/bindings/mmc/davinci_mmc.txt b/Documentation/devicetree/bindings/mmc/davinci_mmc.txt new file mode 100644 index 000000000000..e5a0140b2381 --- /dev/null +++ b/Documentation/devicetree/bindings/mmc/davinci_mmc.txt @@ -0,0 +1,33 @@ +* TI Highspeed MMC host controller for DaVinci + +The Highspeed MMC Host Controller on TI DaVinci family +provides an interface for MMC, SD and SDIO types of memory cards. + +This file documents the properties used by the davinci_mmc driver. + +Required properties: +- compatible: + Should be "ti,da830-mmc": for da830, da850, dm365 + Should be "ti,dm355-mmc": for dm355, dm644x + +Optional properties: +- bus-width: Number of data lines, can be <1>, <4>, or <8>, default <1> +- max-frequency: Maximum operating clock frequency, default 25MHz. +- dmas: List of DMA specifiers with the controller specific format + as described in the generic DMA client binding. A tx and rx + specifier is required. +- dma-names: RX and TX DMA request names. These strings correspond + 1:1 with the DMA specifiers listed in dmas. + +Example: +mmc0: mmc@1c40000 { + compatible = "ti,da830-mmc", + reg = <0x40000 0x1000>; + interrupts = <16>; + status = "okay"; + bus-width = <4>; + max-frequency = <50000000>; + dmas = <&edma 16 + &edma 17>; + dma-names = "rx", "tx"; +}; -- cgit v1.2.1 From eed48556a789d2c7fd2dacbc0060e463ed72e449 Mon Sep 17 00:00:00 2001 From: Murali Karicheri Date: Wed, 3 Apr 2013 19:39:07 +0530 Subject: spi/davinci: add DT binding documentation Add binding documentation for spi-davinci module. [prakash.pm@ti.com: Follow DT naming convention for compatible property] Signed-off-by: Murali Karicheri Acked-by: Grant Likely Signed-off-by: Manjunathappa, Prakash Signed-off-by: Sekhar Nori --- .../devicetree/bindings/spi/spi-davinci.txt | 51 ++++++++++++++++++++++ 1 file changed, 51 insertions(+) create mode 100644 Documentation/devicetree/bindings/spi/spi-davinci.txt (limited to 'Documentation/devicetree') diff --git a/Documentation/devicetree/bindings/spi/spi-davinci.txt b/Documentation/devicetree/bindings/spi/spi-davinci.txt new file mode 100644 index 000000000000..6d0ac8d0ad9b --- /dev/null +++ b/Documentation/devicetree/bindings/spi/spi-davinci.txt @@ -0,0 +1,51 @@ +Davinci SPI controller device bindings + +Required properties: +- #address-cells: number of cells required to define a chip select + address on the SPI bus. Should be set to 1. +- #size-cells: should be zero. +- compatible: + - "ti,dm6441-spi" for SPI used similar to that on DM644x SoC family + - "ti,da830-spi" for SPI used similar to that on DA8xx SoC family +- reg: Offset and length of SPI controller register space +- num-cs: Number of chip selects +- ti,davinci-spi-intr-line: interrupt line used to connect the SPI + IP to the interrupt controller within the SoC. Possible values + are 0 and 1. Manual says one of the two possible interrupt + lines can be tied to the interrupt controller. Set this + based on a specifc SoC configuration. +- interrupts: interrupt number mapped to CPU. +- clocks: spi clk phandle + +Example of a NOR flash slave device (n25q032) connected to DaVinci +SPI controller device over the SPI bus. + +spi0:spi@20BF0000 { + #address-cells = <1>; + #size-cells = <0>; + compatible = "ti,dm6446-spi"; + reg = <0x20BF0000 0x1000>; + num-cs = <4>; + ti,davinci-spi-intr-line = <0>; + interrupts = <338>; + clocks = <&clkspi>; + + flash: n25q032@0 { + #address-cells = <1>; + #size-cells = <1>; + compatible = "st,m25p32"; + spi-max-frequency = <25000000>; + reg = <0>; + + partition@0 { + label = "u-boot-spl"; + reg = <0x0 0x80000>; + read-only; + }; + + partition@1 { + label = "test"; + reg = <0x80000 0x380000>; + }; + }; +}; -- cgit v1.2.1