On Tue, Sep 06, 2016 at 10:57:22AM +0800, linshunquan 00354166 wrote:
> From: Shunquan Lin <linshunqu...@hisilicon.com>
>
> This patch adds driver support for HiSilicon Flash Memory
> Controller(FMC). HiSilicon FMC is a multi-functions device which
> supports SPI Nor flash controller, SPI nand Flash controller and
> parallel nand flash controller.
>
> Signed-off-by: Shunquan Lin <linshunqu...@hisilicon.com>
> ---
> .../devicetree/bindings/mfd/hisilicon,hisi-fmc.txt | 54 ++++++++++
> drivers/mfd/Kconfig | 10 ++
> drivers/mfd/Makefile | 1 +
> drivers/mfd/hisi_fmc.c | 109
> +++++++++++++++++++++
> include/linux/mfd/hisi_fmc.h | 92 +++++++++++++++++
> 5 files changed, 266 insertions(+)
> create mode 100644
> Documentation/devicetree/bindings/mfd/hisilicon,hisi-fmc.txt
> create mode 100644 drivers/mfd/hisi_fmc.c
> create mode 100644 include/linux/mfd/hisi_fmc.h
>
> diff --git a/Documentation/devicetree/bindings/mfd/hisilicon,hisi-fmc.txt
> b/Documentation/devicetree/bindings/mfd/hisilicon,hisi-fmc.txt
> new file mode 100644
> index 0000000..cdaa0bf
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mfd/hisilicon,hisi-fmc.txt
> @@ -0,0 +1,54 @@
> +HiSilicon Flash Memory Controller
> +
> +The HiSilicon Flash Memory Controller(FMC) is a feature-rich controller
> +that supports SPI Nor, SPI Nand and Parallel Nand devices. This document
> +describes the binding for HiSilicon FMC device and its sub-notes.
> +
> +Required properties:
> +- compatible : Should be "hisilicon,hisi-fmc".
> +- reg : Offset and length of the register set for the controller device.
> +- reg-names : Must include the following two entries: "control", "memory".
> +- address-cells : Should be 1.
> +- size-cells : Should be 0.
> +- clocks : A phandle to the HiSilicon FMC controller clock.
> +
> +Optional sub-nodes:
> + - spi-nor:
> + Required properties:
> + - compatible : "hisilicon,fmc-spi-nor"
> + see "Documentation/devicetree/bindings/mtd/hisilicon,fmc-spi-nor.txt
> +
> + - spi-nand:
> + Required properties:
> + - compatible : "hisilicon,fmc-spi-nand"
> + - reg : The chipselect for spi-nand devices
> + - address-cells : Should be 1.
> + - size-cells : Should be 0.
> +
> + - nand:
> + Required properties:
> + - compatible : "hisilicon,fmc-nand"
> + - reg : The chipselect for nand devices
> + - address-cells : Should be 1.
> + - size-cells : Should be 0.
> +
> +Example:
> +fmc: spi-nor-controller@10000000 {
> + compatible = "hisilicon,hisi-fmc";
> + reg = <0x10000000 0x1000>, <0x14000000 0x1000000>;
> + reg-names = "control", "memory";
> + clocks = <&crg FMC_CLK>;
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + hisfc:spi-nor@0 {
> + compatible = "hisilicon,fmc-spi-nor";
Is this an actual h/w sub-block? If not remove this node and make the
spi-nor the immediate child.
> + #address-cells = <1>;
> + #size-cells = <0>;
> + hi_sfc {
> + compatible = "jedec,spi-nor";
> + reg = <0>;
> + };
> + };
> +
> +};
