Commit b2037daf authored by Neil Armstrong's avatar Neil Armstrong Committed by Kevin Hilman

arm64: dts: meson-gxl-s805x: reduce initial Mali450 core frequency

When starting at 744MHz, the Mali 450 core crashes on S805X based boards:
 lima d00c0000.gpu: IRQ ppmmu3 not found
 lima d00c0000.gpu: IRQ ppmmu4 not found
 lima d00c0000.gpu: IRQ ppmmu5 not found
 lima d00c0000.gpu: IRQ ppmmu6 not found
 lima d00c0000.gpu: IRQ ppmmu7 not found
 Internal error: synchronous external abort: 96000210 [#1] PREEMPT SMP
 Modules linked in:
 CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.7.2+ #492
 Hardware name: Libre Computer AML-S805X-AC (DT)
 pstate: 40000005 (nZcv daif -PAN -UAO)
 pc : lima_gp_init+0x28/0x188
 ...
 Call trace:
  lima_gp_init+0x28/0x188
  lima_device_init+0x334/0x534
  lima_pdev_probe+0xa4/0xe4
 ...
 Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b

Reverting to a safer 666Mhz frequency on the S805X that doesn't use the
GP0 PLL makes it more stable.

Fixes: fd477164 ("ARM64: dts: add S805X based P241 board")
Fixes: 0449b8e3 ("arm64: dts: meson: add libretech aml-s805x-ac board")
Signed-off-by: default avatarNeil Armstrong <narmstrong@baylibre.com>
Signed-off-by: default avatarKevin Hilman <khilman@baylibre.com>
Link: https://lore.kernel.org/r/20200618132737.14243-1-narmstrong@baylibre.com
parent 95ca6f06
...@@ -10,7 +10,7 @@ ...@@ -10,7 +10,7 @@
#include <dt-bindings/input/input.h> #include <dt-bindings/input/input.h>
#include <dt-bindings/sound/meson-aiu.h> #include <dt-bindings/sound/meson-aiu.h>
#include "meson-gxl-s905x.dtsi" #include "meson-gxl-s805x.dtsi"
/ { / {
compatible = "libretech,aml-s805x-ac", "amlogic,s805x", compatible = "libretech,aml-s805x-ac", "amlogic,s805x",
......
...@@ -9,7 +9,7 @@ ...@@ -9,7 +9,7 @@
#include <dt-bindings/input/input.h> #include <dt-bindings/input/input.h>
#include "meson-gxl-s905x.dtsi" #include "meson-gxl-s805x.dtsi"
/ { / {
compatible = "amlogic,p241", "amlogic,s805x", "amlogic,meson-gxl"; compatible = "amlogic,p241", "amlogic,s805x", "amlogic,meson-gxl";
......
// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
/*
* Copyright (c) 2020 BayLibre SAS
* Author: Neil Armstrong <narmstrong@baylibre.com>
*/
#include "meson-gxl-s905x.dtsi"
/ {
compatible = "amlogic,s805x", "amlogic,meson-gxl";
};
/* The S805X Package doesn't seem to handle the 744MHz OPP correctly */
&mali {
assigned-clocks = <&clkc CLKID_MALI_0_SEL>,
<&clkc CLKID_MALI_0>,
<&clkc CLKID_MALI>; /* Glitch free mux */
assigned-clock-parents = <&clkc CLKID_FCLK_DIV3>,
<0>, /* Do Nothing */
<&clkc CLKID_MALI_0>;
assigned-clock-rates = <0>, /* Do Nothing */
<666666666>,
<0>; /* Do Nothing */
};
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