mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-22 19:23:07 +00:00
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
77 lines
1.4 KiB
Text
77 lines
1.4 KiB
Text
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* dts file for Xilinx ZynqMP ZCU1275
|
|
*
|
|
* (C) Copyright 2017 - 2021, Xilinx, Inc.
|
|
*
|
|
* Michal Simek <michal.simek@xilinx.com>
|
|
* Siva Durga Prasad Paladugu <sivadur@xilinx.com>
|
|
*/
|
|
|
|
/dts-v1/;
|
|
|
|
#include "zynqmp.dtsi"
|
|
#include "zynqmp-clk-ccf.dtsi"
|
|
|
|
/ {
|
|
model = "ZynqMP ZCU1275 RevA";
|
|
compatible = "xlnx,zynqmp-zcu1275-revA", "xlnx,zynqmp-zcu1275",
|
|
"xlnx,zynqmp";
|
|
|
|
aliases {
|
|
serial0 = &uart0;
|
|
serial1 = &dcc;
|
|
spi0 = &qspi;
|
|
};
|
|
|
|
chosen {
|
|
bootargs = "earlycon";
|
|
stdout-path = "serial0:115200n8";
|
|
};
|
|
|
|
memory@0 {
|
|
device_type = "memory";
|
|
reg = <0x0 0x0 0x0 0x80000000>;
|
|
};
|
|
};
|
|
|
|
&dcc {
|
|
status = "okay";
|
|
};
|
|
|
|
&gpio {
|
|
status = "okay";
|
|
};
|
|
|
|
&qspi {
|
|
status = "okay";
|
|
flash@0 {
|
|
compatible = "m25p80", "jedec,spi-nor"; /* 32MB */
|
|
#address-cells = <1>;
|
|
#size-cells = <1>;
|
|
reg = <0x0>;
|
|
spi-tx-bus-width = <4>;
|
|
spi-rx-bus-width = <4>; /* FIXME also DUAL configuration possible */
|
|
spi-max-frequency = <108000000>; /* Based on DC1 spec */
|
|
partition@0 { /* for testing purpose */
|
|
label = "qspi-fsbl-uboot";
|
|
reg = <0x0 0x100000>;
|
|
};
|
|
partition@100000 { /* for testing purpose */
|
|
label = "qspi-linux";
|
|
reg = <0x100000 0x500000>;
|
|
};
|
|
partition@600000 { /* for testing purpose */
|
|
label = "qspi-device-tree";
|
|
reg = <0x600000 0x20000>;
|
|
};
|
|
partition@620000 { /* for testing purpose */
|
|
label = "qspi-rootfs";
|
|
reg = <0x620000 0x5E0000>;
|
|
};
|
|
};
|
|
};
|
|
|
|
&uart0 {
|
|
status = "okay";
|
|
};
|