[PATCH] ARM: dts: exynos: Remove 'opp-shared' from Exynos3 bus OPP-tables

[PATCH] ARM: dts: exynos: Remove 'opp-shared' from Exynos3 bus OPP-tables

[Marek Szyprowski]

Commits 1019fe2c7280 ("ARM: dts: exynos: Adjust bus related OPPs to the
values correct for Exynos5422 Odroids") and 9ff416cf45a0 ("ARM: dts:
exynos: Disable frequency scaling for FSYS bus on Odroid XU3 family")
revealed that 'opp-shared' property for the Exynos bus OPPs was used
incorrectly, what had the side-effect of disabling frequency scaling for
the second and latter buses sharing given OPP-table.

Fix this by removing bogus 'opp-shared' properties from Exynos3 bus
OPP-tables. This restores frequency scaling for the following busses:
RightBus, LCD0, FSYS and MFC.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
---
 arch/arm/boot/dts/exynos3250.dtsi | 5 -----
 1 file changed, 5 deletions(-)

diff --git a/arch/arm/boot/dts/exynos3250.dtsi b/arch/arm/boot/dts/exynos3250.dtsi
index a1e93fb7f694..75ed82600ec8 100644
--- a/arch/arm/boot/dts/exynos3250.dtsi
+++ b/arch/arm/boot/dts/exynos3250.dtsi
@@ -775,7 +775,6 @@
 
 		bus_dmc_opp_table: opp_table1 {
 			compatible = "operating-points-v2";
-			opp-shared;
 
 			opp-50000000 {
 				opp-hz = /bits/ 64 <50000000>;
@@ -865,7 +864,6 @@
 
 		bus_leftbus_opp_table: opp_table2 {
 			compatible = "operating-points-v2";
-			opp-shared;
 
 			opp-50000000 {
 				opp-hz = /bits/ 64 <50000000>;
@@ -891,7 +889,6 @@
 
 		bus_mcuisp_opp_table: opp_table3 {
 			compatible = "operating-points-v2";
-			opp-shared;
 
 			opp-50000000 {
 				opp-hz = /bits/ 64 <50000000>;
@@ -912,7 +909,6 @@
 
 		bus_isp_opp_table: opp_table4 {
 			compatible = "operating-points-v2";
-			opp-shared;
 
 			opp-50000000 {
 				opp-hz = /bits/ 64 <50000000>;
@@ -933,7 +929,6 @@
 
 		bus_peril_opp_table: opp_table5 {
 			compatible = "operating-points-v2";
-			opp-shared;
 
 			opp-50000000 {
 				opp-hz = /bits/ 64 <50000000>;
-- 
2.17.1

Re: [PATCH] ARM: dts: exynos: Remove 'opp-shared' from Exynos3 bus OPP-tables

[Krzysztof Kozlowski]

On Fri, Sep 11, 2020 at 02:22:20PM +0200, Marek Szyprowski wrote:
> Commits 1019fe2c7280 ("ARM: dts: exynos: Adjust bus related OPPs to the
> values correct for Exynos5422 Odroids") and 9ff416cf45a0 ("ARM: dts:
> exynos: Disable frequency scaling for FSYS bus on Odroid XU3 family")
> revealed that 'opp-shared' property for the Exynos bus OPPs was used
> incorrectly, what had the side-effect of disabling frequency scaling for
> the second and latter buses sharing given OPP-table.
> 
> Fix this by removing bogus 'opp-shared' properties from Exynos3 bus
> OPP-tables. This restores frequency scaling for the following busses:
> RightBus, LCD0, FSYS and MFC.
> 
> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
> ---
>  arch/arm/boot/dts/exynos3250.dtsi | 5 -----
>  1 file changed, 5 deletions(-)

Hi Marek,

Any news on these two patches? Shall I still wait?

Best regards,
Krzysztof

Re: [PATCH] ARM: dts: exynos: Remove 'opp-shared' from Exynos3 bus OPP-tables

[Marek Szyprowski]

Hi Krzysztof,

On 26.10.2020 19:35, Krzysztof Kozlowski wrote:
> On Fri, Sep 11, 2020 at 02:22:20PM +0200, Marek Szyprowski wrote:
>> Commits 1019fe2c7280 ("ARM: dts: exynos: Adjust bus related OPPs to the
>> values correct for Exynos5422 Odroids") and 9ff416cf45a0 ("ARM: dts:
>> exynos: Disable frequency scaling for FSYS bus on Odroid XU3 family")
>> revealed that 'opp-shared' property for the Exynos bus OPPs was used
>> incorrectly, what had the side-effect of disabling frequency scaling for
>> the second and latter buses sharing given OPP-table.
>>
>> Fix this by removing bogus 'opp-shared' properties from Exynos3 bus
>> OPP-tables. This restores frequency scaling for the following busses:
>> RightBus, LCD0, FSYS and MFC.
>>
>> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
>> ---
>>   arch/arm/boot/dts/exynos3250.dtsi | 5 -----
>>   1 file changed, 5 deletions(-)
> Hi Marek,
>
> Any news on these two patches? Shall I still wait?

I would apply it to give the testing in -next. I got the information 
that the crash was not reproduced, thus probably not related to this patch.

Best regards

-- 
Marek Szyprowski, PhD
Samsung R&D Institute Poland

Re: [PATCH] ARM: dts: exynos: Remove 'opp-shared' from Exynos3 bus OPP-tables

[Krzysztof Kozlowski]

On Fri, Sep 11, 2020 at 02:22:20PM +0200, Marek Szyprowski wrote:
> Commits 1019fe2c7280 ("ARM: dts: exynos: Adjust bus related OPPs to the
> values correct for Exynos5422 Odroids") and 9ff416cf45a0 ("ARM: dts:
> exynos: Disable frequency scaling for FSYS bus on Odroid XU3 family")
> revealed that 'opp-shared' property for the Exynos bus OPPs was used
> incorrectly, what had the side-effect of disabling frequency scaling for
> the second and latter buses sharing given OPP-table.
> 
> Fix this by removing bogus 'opp-shared' properties from Exynos3 bus
> OPP-tables. This restores frequency scaling for the following busses:
> RightBus, LCD0, FSYS and MFC.
> 
> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
> ---
>  arch/arm/boot/dts/exynos3250.dtsi | 5 -----

Thanks, applied.

Best regards,
Krzysztof