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6e38e2ea79
In all the ZynqMP boards dts files tx-buswidth is by default set to 1. Due to this the framework only issues 1-1-1 write commands to the GQSPI driver. But the GQSPI controller is capable of handling 1-4-4 write commands, so updated the tx-buswidth to 4 in ZynqMP boards dts files. This would enable the spi-nor framework to issue 1-4-4 write commands instead of 1-1-1. This will increase the tx data transfer rate, as now the tx data will be transferred on four lines instead on single line. Signed-off-by: Amit Kumar Mahapatra <amit.kumar-mahapatra@xilinx.com> Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com> Signed-off-by: Michal Simek <michal.simek@amd.com> Link: https://lore.kernel.org/r/ad61199f55e5e00f29de6206d9d1872a52a7657e.1652193179.git.michal.simek@amd.com
79 lines
1.4 KiB
Text
79 lines
1.4 KiB
Text
// SPDX-License-Identifier: GPL-2.0+
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/*
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* dts file for Xilinx ZynqMP Mini Configuration
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*
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* (C) Copyright 2015 - 2020, Xilinx, Inc.
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*
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* Siva Durga Prasad <siva.durga.paladugu@xilinx.com>
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* Michal Simek <michal.simek@xilinx.com>
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*/
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/dts-v1/;
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/ {
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model = "ZynqMP MINI QSPI";
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compatible = "xlnx,zynqmp";
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#address-cells = <2>;
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#size-cells = <1>;
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aliases {
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serial0 = &dcc;
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spi0 = &qspi;
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};
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chosen {
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stdout-path = "serial0:115200n8";
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};
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memory@fffc0000 {
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device_type = "memory";
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reg = <0x0 0xfffc0000 0x40000>;
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};
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dcc: dcc {
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compatible = "arm,dcc";
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status = "disabled";
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u-boot,dm-pre-reloc;
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};
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amba: amba {
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compatible = "simple-bus";
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#address-cells = <2>;
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#size-cells = <1>;
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ranges;
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qspi: spi@ff0f0000 {
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compatible = "xlnx,zynqmp-qspi-1.0";
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status = "disabled";
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clock-names = "ref_clk", "pclk";
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clocks = <&misc_clk &misc_clk>;
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num-cs = <1>;
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reg = <0x0 0xff0f0000 0x1000 0x0 0xc0000000 0x8000000>;
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#address-cells = <1>;
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#size-cells = <0>;
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};
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misc_clk: misc_clk {
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compatible = "fixed-clock";
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#clock-cells = <0>;
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clock-frequency = <125000000>;
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};
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};
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};
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&qspi {
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status = "okay";
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flash0: flash@0 {
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compatible = "n25q512a11", "jedec,spi-nor";
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#address-cells = <1>;
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#size-cells = <1>;
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reg = <0x0>;
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spi-tx-bus-width = <4>;
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spi-rx-bus-width = <4>;
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spi-max-frequency = <40000000>;
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};
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};
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&dcc {
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status = "okay";
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};
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