linux-stable/arch/arm/boot/dts/mps2.dtsi
Andre Przywara a894c6dd56 ARM: dts: arm: Fix SP805 clocks
The SP805 binding sets the name for the actual watchdog clock to
"wdog_clk" (with an underscore).

Change the name in the DTs for ARM Ltd. platforms to match that. The
Linux and U-Boot driver use the *first* clock for this purpose anyway,
so it does not break anything.

For MPS2 we only specify one clock so far, but the binding requires
two clocks to be named.

In practice, Linux would pick a clock named "apb_pclk" for the bus
clock, and the Linux and U-Boot SP805 driver would use the first clock
to derive the actual watchdog counter frequency. So since currently both
are the very same clock, we can just double the clock reference, and add
the correct clock-names, to match the binding.

Link: https://lore.kernel.org/r/20200828130602.42203-8-andre.przywara@arm.com
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
2020-09-07 10:54:08 +01:00

246 lines
5.9 KiB
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/*
* Copyright (C) 2015 ARM Limited
*
* Author: Vladimir Murzin <vladimir.murzin@arm.com>
*
* This file is dual-licensed: you can use it either under the terms
* of the GPL or the X11 license, at your option. Note that this dual
* licensing only applies to this file, and not this project as a
* whole.
*
* a) This file is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This file is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* Or, alternatively,
*
* b) Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following
* conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
#include "armv7-m.dtsi"
/ {
#address-cells = <1>;
#size-cells = <1>;
oscclk0: clk-osc0 {
compatible = "fixed-clock";
#clock-cells = <0>;
clock-frequency = <50000000>;
};
oscclk1: clk-osc1 {
compatible = "fixed-clock";
#clock-cells = <0>;
clock-frequency = <24576000>;
};
oscclk2: clk-osc2 {
compatible = "fixed-clock";
#clock-cells = <0>;
clock-frequency = <25000000>;
};
cfgclk: clk-cfg {
compatible = "fixed-clock";
#clock-cells = <0>;
clock-frequency = <5000000>;
};
spicfgclk: clk-spicfg {
compatible = "fixed-clock";
#clock-cells = <0>;
clock-frequency = <75000000>;
};
sysclk: clk-sys {
compatible = "fixed-factor-clock";
clocks = <&oscclk0>;
#clock-cells = <0>;
clock-div = <2>;
clock-mult = <1>;
};
audmclk: clk-audm {
compatible = "fixed-factor-clock";
clocks = <&oscclk1>;
#clock-cells = <0>;
clock-div = <2>;
clock-mult = <1>;
};
audsclk: clk-auds {
compatible = "fixed-factor-clock";
clocks = <&oscclk1>;
#clock-cells = <0>;
clock-div = <8>;
clock-mult = <1>;
};
spiclcd: clk-cpiclcd {
compatible = "fixed-factor-clock";
clocks = <&oscclk0>;
#clock-cells = <0>;
clock-div = <2>;
clock-mult = <1>;
};
spicon: clk-spicon {
compatible = "fixed-factor-clock";
clocks = <&oscclk0>;
#clock-cells = <0>;
clock-div = <2>;
clock-mult = <1>;
};
i2cclcd: clk-i2cclcd {
compatible = "fixed-factor-clock";
clocks = <&oscclk0>;
#clock-cells = <0>;
clock-div = <2>;
clock-mult = <1>;
};
i2caud: clk-i2caud {
compatible = "fixed-factor-clock";
clocks = <&oscclk0>;
#clock-cells = <0>;
clock-div = <2>;
clock-mult = <1>;
};
soc {
compatible = "simple-bus";
ranges;
apb@40000000 {
compatible = "simple-bus";
#address-cells = <1>;
#size-cells = <1>;
ranges = <0 0x40000000 0x10000>;
timer0: mps2-timer0@0 {
compatible = "arm,mps2-timer";
reg = <0x0 0x1000>;
interrupts = <8>;
clocks = <&sysclk>;
status = "disabled";
};
timer1: mps2-timer1@1000 {
compatible = "arm,mps2-timer";
reg = <0x1000 0x1000>;
interrupts = <9>;
clocks = <&sysclk>;
status = "disabled";
};
timer2: dual-timer@2000 {
compatible = "arm,sp804", "arm,primecell";
reg = <0x2000 0x1000>;
clocks = <&sysclk>, <&sysclk>, <&sysclk>;
clock-names = "timer0clk", "timer1clk",
"apb_pclk";
interrupts = <10>;
status = "disabled";
};
uart0: serial@4000 {
compatible = "arm,mps2-uart";
reg = <0x4000 0x1000>;
interrupts = <0>, <1>, <12>;
clocks = <&sysclk>;
status = "disabled";
};
uart1: serial@5000 {
compatible = "arm,mps2-uart";
reg = <0x5000 0x1000>;
interrupts = <2>, <3>, <12>;
clocks = <&sysclk>;
status = "disabled";
};
uart2: serial@6000 {
compatible = "arm,mps2-uart";
reg = <0x6000 0x1000>;
interrupts = <4>, <5>, <12>;
clocks = <&sysclk>;
status = "disabled";
};
wdt: watchdog@8000 {
compatible = "arm,sp805", "arm,primecell";
arm,primecell-periphid = <0x00141805>;
reg = <0x8000 0x1000>;
interrupts = <0>;
clocks = <&sysclk>, <&sysclk>;
clock-names = "wdog_clk", "apb_pclk";
status = "disabled";
};
};
};
fpga@40020000 {
compatible = "simple-bus";
#address-cells = <1>;
#size-cells = <1>;
ranges = <0 0x40020000 0x10000>;
fpgaio@8000 {
compatible = "syscon", "simple-mfd";
reg = <0x8000 0x10>;
led0 {
compatible = "register-bit-led";
offset = <0x0>;
mask = <0x01>;
label = "userled:0";
linux,default-trigger = "heartbeat";
default-state = "on";
};
led1 {
compatible = "register-bit-led";
offset = <0x0>;
mask = <0x02>;
label = "userled:1";
linux,default-trigger = "usr";
default-state = "off";
};
};
};
smb {
compatible = "simple-bus";
#address-cells = <2>;
#size-cells = <1>;
ranges = <0 0 0x40200000 0x10000>,
<1 0 0xa0000000 0x10000>;
};
};