[PATCH 16/19] arm64: dts: exynos: Add dts files for 64-bit Exynos5433 SoC

Chanwoo Choi cw00.choi at samsung.com
Fri Nov 28 05:51:03 PST 2014


Dear Marc,

On 11/27/2014 07:26 PM, Marc Zyngier wrote:
> On 27/11/14 07:35, Chanwoo Choi wrote:
>> This patch adds new Exynos5433 dtsi to support 64-bit Exynos5433 SoC
>> based on Octal core CPUs (quad Cortex-A57 and quad Cortex-A53).
>>
>> Cc: Kukjin Kim <kgene.kim at samsung.com>
>> Cc: Mark Rutland <mark.rutland at arm.com>
>> Cc: Arnd Bergmann <arnd at arndb.de>
>> Cc: Olof Johansson <olof at lixom.net>
>> Cc: Catalin Marinas <catalin.marinas at arm.com>
>> Cc: Will Deacon <will.deacon at arm.com>
>> Signed-off-by: Chanwoo Choi <cw00.choi at samsung.com>
>> Acked-by: Inki Dae <inki.dae at samsung.com>
>> Acked-by: Geunsik Lim <geunsik.lim at samsung.com>
>> ---
>>  arch/arm64/boot/dts/exynos/exynos5433-pinctrl.dtsi | 698 +++++++++++++++++++++
>>  arch/arm64/boot/dts/exynos/exynos5433.dtsi         | 523 +++++++++++++++
>>  2 files changed, 1221 insertions(+)
>>  create mode 100644 arch/arm64/boot/dts/exynos/exynos5433-pinctrl.dtsi
>>  create mode 100644 arch/arm64/boot/dts/exynos/exynos5433.dtsi
>>
> 
> [...]
> 
>> diff --git a/arch/arm64/boot/dts/exynos/exynos5433.dtsi b/arch/arm64/boot/dts/exynos/exynos5433.dtsi
>> new file mode 100644
>> index 0000000..3d8b576
>> --- /dev/null
>> +++ b/arch/arm64/boot/dts/exynos/exynos5433.dtsi
> 
> [...]
> 
>> +               timer {
>> +                       compatible = "arm,armv8-timer";
>> +                       interrupts = <1 13 0xff01>,
>> +                                    <1 14 0xff01>,
>> +                                    <1 11 0xff01>,
>> +                                    <1 10 0xff01>;
> 
> This is wrong. Timer interrupts for both A53 and A57 are level triggered.

I'll fix it level triggering instead of edge triggering.

If possible, could you give the document url to check the correct type of level trigger?
whether irq is high level trigger or low level trigger.

> 
>> +                       clock-frequency = <24000000>;
> 
> Please go and fix your firmware. Really...
> 
>> +                       use-clocksource-only;
>> +                       use-physical-timer;
>> +               };
> 
> Well, that's a total NAK. Neither of these properties are part of the
> binding, and we've already established that none of that would never be
> valid on arm64.
> 
> I suggest you finally do what we've been asking for years, which is to
> fix your boot ROM by adding the 5 lines of assembly code that are needed
> instead of repeatedly post the same bogus DT files.

I'll remove last three properties.

Best Regards,
Chanwoo Choi





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