linux-kernel - RE: [PATCH v2] arm64: dts: exynos: Add DT node for all UART ports

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Message-ID: <06b501dbaf56$0fab3b90$2f01b2b0$@samsung.com>
Date: Thu, 17 Apr 2025 10:33:12 +0530
From: "Faraz Ata" <faraz.ata@...sung.com>
To: "'Krzysztof Kozlowski'" <krzk@...nel.org>, <alim.akhtar@...sung.com>,
	<robh@...nel.org>, <krzk+dt@...nel.org>, <conor+dt@...nel.org>
Cc: <devicetree@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>,
	<linux-samsung-soc@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<rosa.pila@...sung.com>, <dev.tailor@...sung.com>,
	<suyash.bitti@...sung.com>
Subject: RE: [PATCH v2] arm64: dts: exynos: Add DT node for all UART ports

Hello Krzysztof

> -----Original Message-----
> From: Krzysztof Kozlowski <krzk@...nel.org>
> Sent: Saturday, April 12, 2025 3:41 PM
> To: Faraz Ata <faraz.ata@...sung.com>; alim.akhtar@...sung.com;
> robh@...nel.org; krzk+dt@...nel.org; conor+dt@...nel.org
> Cc: devicetree@...r.kernel.org; linux-arm-kernel@...ts.infradead.org; linux-
> samsung-soc@...r.kernel.org; linux-kernel@...r.kernel.org;
> rosa.pila@...sung.com; dev.tailor@...sung.com;
> suyash.bitti@...sung.com
> Subject: Re: [PATCH v2] arm64: dts: exynos: Add DT node for all UART ports
> 
> On 11/04/2025 09:07, Faraz Ata wrote:
> > Hello Krzysztof
> >
> >> Subject: Re: [PATCH v2] arm64: dts: exynos: Add DT node for all UART
> >> ports
> >>
> >> On 18/03/2025 08:56, Faraz Ata wrote:
> >>> +
> >>> +		usi_17: usi@...800c0 {
> >>
> >> Messed order. Keep nodes sorted by unit address (see DTS coding style).
> >>
> >>
> > Thanks for your review
> > Based on the DTS coding style, it is acceptable to group nodes of the
> > same type together, even if it breaks the unit address ordering.
> 
> That's accepted alternative because some subsystems do that way. I don't
> think we ever applied such rule to Samsung? Do you have any prior
> reference about this? I accepted mess in the past, but that does not mean
> that mess is the rule.
> 
> > https://docs.kernel.org/6.12/devicetree/bindings/dts-coding-style.html
> > Please let me know your opinion on this.
> > Do you mean I should move all the USI_ node after pwm node?
> 
> Please it according to sorting by unit address.
> 
USI is spread across two blocks BLK_PERIC0 and BLK_PERIC1,
USI00 to USI08 fall under BLK_PERIC0
USI09 to USI17 fall under BLK_PERIC1.
Will send another version with USI nodes sorted by unit address with respect to BLK_PERIC0 and BLK_PERIC1.
> 
> Best regards,
> Krzysztof