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Message-ID: <7b269c9f-803e-69d6-9416-1620e1726e7e@kernel.org>
Date: Thu, 9 Mar 2023 07:15:36 +0100
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Dipen Patel <dipenp@...dia.com>, thierry.reding@...il.com,
jonathanh@...dia.com, linux-kernel@...r.kernel.org,
linux-tegra@...r.kernel.org, linux-gpio@...r.kernel.org,
linus.walleij@...aro.org, devicetree@...r.kernel.org,
linux-doc@...r.kernel.org, robh+dt@...nel.org,
timestamp@...ts.linux.dev
Subject: Re: [PATCH V2 6/6] arm64: tegra: Add GTE nodes
On 08/03/2023 21:13, Dipen Patel wrote:
> On 2/16/23 6:18 AM, Krzysztof Kozlowski wrote:
>> On 14/02/2023 12:55, Dipen Patel wrote:
>>> Add GTE nodes for the tegra234. Also modify AON GTE nodes for the
>>> tegra194 to remove nvidia,slice property and add nvidia,gpio-controller
>>> propertyto specify AON GPIO controller node so that GTE driver can
>>> do namespace conversion between GPIO lines provided by the gpiolib
>>> framework and hardware timestamping engine subsystem.
>>>
>>> Signed-off-by: Dipen Patel <dipenp@...dia.com>
>>> ---
>>> arch/arm64/boot/dts/nvidia/tegra194.dtsi | 3 +--
>>> arch/arm64/boot/dts/nvidia/tegra234.dtsi | 19 +++++++++++++++++++
>>> 2 files changed, 20 insertions(+), 2 deletions(-)
>>>
>>> diff --git a/arch/arm64/boot/dts/nvidia/tegra194.dtsi b/arch/arm64/boot/dts/nvidia/tegra194.dtsi
>>> index 4afcbd60e144..4c92850b1ec4 100644
>>> --- a/arch/arm64/boot/dts/nvidia/tegra194.dtsi
>>> +++ b/arch/arm64/boot/dts/nvidia/tegra194.dtsi
>>> @@ -1363,7 +1363,6 @@
>>> reg = <0x3aa0000 0x10000>;
>>> interrupts = <GIC_SPI 11 IRQ_TYPE_LEVEL_HIGH>;
>>> nvidia,int-threshold = <1>;
>>> - nvidia,slices = <11>;
>>> #timestamp-cells = <1>;
>>> status = "okay";
>>> };
>>> @@ -1586,7 +1585,7 @@
>>> reg = <0xc1e0000 0x10000>;
>>> interrupts = <GIC_SPI 13 IRQ_TYPE_LEVEL_HIGH>;
>>> nvidia,int-threshold = <1>;
>>> - nvidia,slices = <3>;
>>> + nvidia,gpio-controller = <&gpio_aon>;
>>> #timestamp-cells = <1>;
>>> status = "okay";
>>> };
>>> diff --git a/arch/arm64/boot/dts/nvidia/tegra234.dtsi b/arch/arm64/boot/dts/nvidia/tegra234.dtsi
>>> index eaf05ee9acd1..4a87490c5fd4 100644
>>> --- a/arch/arm64/boot/dts/nvidia/tegra234.dtsi
>>> +++ b/arch/arm64/boot/dts/nvidia/tegra234.dtsi
>>> @@ -1086,6 +1086,15 @@
>>> clock-names = "fuse";
>>> };
>>>
>>> + hte_lic: hardware-timestamp@...0000 {
>>> + compatible = "nvidia,tegra234-gte-lic";
>>> + reg = <0x3aa0000 0x10000>;
>>> + interrupts = <GIC_SPI 11 IRQ_TYPE_LEVEL_HIGH>;
>>> + nvidia,int-threshold = <1>;
>>> + #timestamp-cells = <1>;
>>> + status = "okay";
>>
>> Why do you need status? It's okay by default.
> what's harm of having to explicitly mentioned?
Because useless code is not helping any review. We do not add other
useless properties, or shall we add them?
>I can see status = okay in this dtsi file
> for other nodes as well and was just following that.
So if you see a bug somewhere, you also duplicate it in your code?
Best regards,
Krzysztof
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