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* [RFCv1 0/1] Odroid C2: Enable DVFS for cpu
@ 2019-09-07 16:51 Anand Moon
  2019-09-07 16:51 ` [RFCv1 1/1] arm64: dts: meson: odroid-c2: Enable SCPI " Anand Moon
  0 siblings, 1 reply; 2+ messages in thread
From: Anand Moon @ 2019-09-07 16:51 UTC (permalink / raw)
  To: Rob Herring, Martin Blumenstingl, Jerome Brunet, Neil Armstrong,
	Kevin Hilman
  Cc: devicetree, linux-arm-kernel, linux-amlogic

This patch enable DVFS on GXBB Odroid C2.

DVFS has been tested by running the arm64 cpuburn
[1] https://github.com/ssvb/cpuburn-arm/blob/master/cpuburn-a53.S
PM-QA testing
[2] https://git.linaro.org/power/pm-qa.git [cpufreq testcase]

Tested on latest U-Boot 2019.07-1 (Aug 01 2019 - 23:58:01 +0000) Arch Linux ARM

Patch based on my linu-next-20190904 on top of my previous patch's.

Best Regards
-Anand

Anand Moon (1):
  arm64: dts: meson: odroid-c2: Enable SCPI DVFS for cpu

 arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

-- 
2.23.0


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^ permalink raw reply	[flat|nested] 2+ messages in thread

* [RFCv1 1/1] arm64: dts: meson: odroid-c2: Enable SCPI DVFS for cpu
  2019-09-07 16:51 [RFCv1 0/1] Odroid C2: Enable DVFS for cpu Anand Moon
@ 2019-09-07 16:51 ` " Anand Moon
  0 siblings, 0 replies; 2+ messages in thread
From: Anand Moon @ 2019-09-07 16:51 UTC (permalink / raw)
  To: Rob Herring, Martin Blumenstingl, Jerome Brunet, Neil Armstrong,
	Kevin Hilman
  Cc: devicetree, linux-arm-kernel, linux-amlogic

Enable System Control and Power Interface, DVFS for cpu
with setting 1.54 GHz as max freq in the initial SCPI tables
loaded by the BL2, i.e. packed with U-Boot.

Fixes: f7bcd4b6f698 (ARM64: dts: meson-gxbb-odroidc2: Disable SCPI DVFS)
Cc: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Cc: Jerome Brunet <jbrunet@baylibre.com>
Cc: Neil Armstrong <narmstrong@baylibre.com>
Cc: Kevin Hilman <khilman@baylibre.com>
Suggested-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Anand Moon <linux.amoon@gmail.com>
---
In discuss on other mailing list thread below.
[0] https://lkml.org/lkml/2019/8/30/186

Tested on mainline U-Boot 2019.07-1 (Aug 01 2019 - 23:58:01 +0000) Arch Linux ARM
on archlinux distro.
---
 arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts b/arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts
index 6ae9fafe4244..7e822408ba26 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts
+++ b/arch/arm64/boot/dts/amlogic/meson-gxbb-odroidc2.dts
@@ -307,7 +307,7 @@
 };
 
 &scpi_clocks {
-	status = "disabled";
+	status = "okay";
 };
 
 /* SD */
-- 
2.23.0


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2019-09-07 16:51 [RFCv1 0/1] Odroid C2: Enable DVFS for cpu Anand Moon
2019-09-07 16:51 ` [RFCv1 1/1] arm64: dts: meson: odroid-c2: Enable SCPI " Anand Moon

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