diff mbox series

[U-Boot,v3,4/6] imx8qm: fix cpu frequency reporting

Message ID 20190531160020.9755-5-marcel@ziswiler.com
State Awaiting Upstream
Delegated to: Stefano Babic
Headers show
Series apalis imx8qm 4gb wb it v1.0b module support | expand

Commit Message

Marcel Ziswiler May 31, 2019, 4 p.m. UTC 
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>

---

Changes in v3: None
Changes in v2: None

 arch/arm/mach-imx/imx8/cpu.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

Comments

Stefano Babic June 10, 2019, 9:40 a.m. UTC | #1 
> 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>

Applied to u-boot-imx, master, thanks !

Best regards,
Stefano Babic
diff mbox series

Patch

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);