From 1da39d3ce89cd5c43e22f0a18f969093b6f41450 Mon Sep 17 00:00:00 2001
From: Marcel Ziswiler <marcel@ziswiler.com>
Date: Fri, 31 May 2019 19:00:18 +0300
Subject: [PATCH] imx8qm: fix cpu frequency reporting
CPU frequency reporting failed with the following error message being
printed:
sc_pm_get_clock_rate: resource:507 clk:2: res:3
Could not read CPU frequency: -22
CPU: NXP i.MX8QM RevB A53 at 0 MHz
Fix this by differentiating between the A35 as found on the i.MX 8QXP
and the A53 as found on the i.MX 8QM SoCs.
Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Reviewed-by: Max Krummenacher <max.krummenacher@toradex.com>
---
arch/arm/mach-imx/imx8/cpu.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/arch/arm/mach-imx/imx8/cpu.c b/arch/arm/mach-imx/imx8/cpu.c
index 53f9a8735a..aa78444d8f 100644
--- a/arch/arm/mach-imx/imx8/cpu.c
+++ b/arch/arm/mach-imx/imx8/cpu.c
@@ -623,8 +623,10 @@ static ulong imx8_get_cpu_rate(void)
{
ulong rate;
int ret;
+ int type = is_cortex_a35() ? SC_R_A35 : is_cortex_a53() ?
+ SC_R_A53 : SC_R_A72;
- ret = sc_pm_get_clock_rate(-1, SC_R_A35, SC_PM_CLK_CPU,
+ ret = sc_pm_get_clock_rate(-1, type, SC_PM_CLK_CPU,
(sc_pm_clock_rate_t *)&rate);
if (ret) {
printf("Could not read CPU frequency: %d\n", ret);
--
2.39.5