u-boot/arch/arm/dts/zynqmp-zc1232-revA.dts
Amit Kumar Mahapatra 6e38e2ea79 arm64: zynqmp: Set qspi tx-buswidth to 4
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
2022-05-18 13:17:18 +02:00

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// SPDX-License-Identifier: GPL-2.0+
/*
* dts file for Xilinx ZynqMP ZC1232
*
* (C) Copyright 2017 - 2021, Xilinx, Inc.
*
* Michal Simek <michal.simek@xilinx.com>
*/
/dts-v1/;
#include "zynqmp.dtsi"
#include "zynqmp-clk-ccf.dtsi"
/ {
model = "ZynqMP ZC1232 RevA";
compatible = "xlnx,zynqmp-zc1232-revA", "xlnx,zynqmp-zc1232", "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";
};
&qspi {
status = "okay";
flash@0 {
compatible = "m25p80", "jedec,spi-nor"; /* 32MB FIXME */
#address-cells = <1>;
#size-cells = <1>;
reg = <0x0>;
spi-tx-bus-width = <4>;
spi-rx-bus-width = <4>;
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>;
};
};
};
&sata {
status = "okay";
/* SATA OOB timing settings */
ceva,p0-cominit-params = /bits/ 8 <0x18 0x40 0x18 0x28>;
ceva,p0-comwake-params = /bits/ 8 <0x06 0x14 0x08 0x0E>;
ceva,p0-burst-params = /bits/ 8 <0x13 0x08 0x4A 0x06>;
ceva,p0-retry-params = /bits/ 16 <0x96A4 0x3FFC>;
ceva,p1-cominit-params = /bits/ 8 <0x18 0x40 0x18 0x28>;
ceva,p1-comwake-params = /bits/ 8 <0x06 0x14 0x08 0x0E>;
ceva,p1-burst-params = /bits/ 8 <0x13 0x08 0x4A 0x06>;
ceva,p1-retry-params = /bits/ 16 <0x96A4 0x3FFC>;
};
&uart0 {
status = "okay";
};