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SubjectRe: [PATCH] arm64: dts: stratix10: Add QSPI support for Stratix10
On Thu, May 10, 2018 at 3:46 PM,  <thor.thayer@linux.intel.com> wrote:
> From: Thor Thayer <thor.thayer@linux.intel.com>
>
> Add qspi_clock
> The qspi_clk frequency is updated by U-Boot before starting Linux.
> Add QSPI interface node.
> Add QSPI flash memory child node.
> Setup the QSPI memory in 2 partitions.
>
> Signed-off-by: Thor Thayer <thor.thayer@linux.intel.com>
> ---
> arch/arm64/boot/dts/altera/socfpga_stratix10.dtsi | 22 +++++++++++++++
> .../boot/dts/altera/socfpga_stratix10_socdk.dts | 31 ++++++++++++++++++++++
> 2 files changed, 53 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/altera/socfpga_stratix10.dtsi b/arch/arm64/boot/dts/altera/socfpga_stratix10.dtsi
> index e6b059378dc0..ed47dfce3ba6 100644
> --- a/arch/arm64/boot/dts/altera/socfpga_stratix10.dtsi
> +++ b/arch/arm64/boot/dts/altera/socfpga_stratix10.dtsi
> @@ -119,6 +119,12 @@
> #clock-cells = <0>;
> compatible = "fixed-clock";
> };
> +
> + qspi_clk: qspi_clk {

s/_/-/

> + #clock-cells = <0>;
> + compatible = "fixed-clock";
> + clock-frequency = <200000000>;
> + };
> };
>
> gmac0: ethernet@ff800000 {
> @@ -466,5 +472,21 @@
> interrupts = <16 4>, <48 4>;
> };
> };
> +
> + qspi: spi@ff8d2000 {
> + compatible = "cdns,qspi-nor";
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <0xff8d2000 0x100>,
> + <0xff900000 0x100000>;
> + interrupts = <0 3 4>;
> + cdns,fifo-depth = <128>;
> + cdns,fifo-width = <4>;
> + cdns,trigger-address = <0x00000000>;
> + clocks = <&qspi_clk>;
> + bus-num = <1>;
> +
> + status = "disabled";
> + };
> };
> };
> diff --git a/arch/arm64/boot/dts/altera/socfpga_stratix10_socdk.dts b/arch/arm64/boot/dts/altera/socfpga_stratix10_socdk.dts
> index f9b1ef12db48..60251462067a 100644
> --- a/arch/arm64/boot/dts/altera/socfpga_stratix10_socdk.dts
> +++ b/arch/arm64/boot/dts/altera/socfpga_stratix10_socdk.dts
> @@ -147,3 +147,34 @@
> reg = <0x68>;
> };
> };
> +
> +&qspi {
> + flash0: n25q00@0 {

flash@0

> + #address-cells = <1>;
> + #size-cells = <1>;
> + compatible = "n25q00aa";
> + reg = <0>;
> + spi-max-frequency = <50000000>;
> +
> + m25p,fast-read;
> + cdns,page-size = <256>;
> + cdns,block-size = <16>;
> + cdns,read-delay = <1>;
> + cdns,tshsl-ns = <50>;
> + cdns,tsd2d-ns = <50>;
> + cdns,tchsh-ns = <4>;
> + cdns,tslch-ns = <4>;
> +
> + partition@qspi-boot {

use a 'partitions' node to contain all the partitions.

> + label = "Boot and fpga data";
> + /* 64MB for boot and FPGA data */
> + reg = <0x0 0x4000000>;
> + };
> +
> + partition@qspi-rootfs {
> + label = "Root Filesystem - JFFS2";
> + /* 64MB for Linux jffs2 */
> + reg = <0x4000000 0x4000000>;
> + };
> + };
> +};
> --
> 2.7.4
>

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