linux-kernel - Re: [PATCH v7] ARM: dts: Prepare node labels for exynos5250

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Date:	Fri, 22 Aug 2014 09:14:56 -0700
From:	Doug Anderson <dianders@...omium.org>
To:	Kukjin Kim <kgene.kim@...sung.com>
Cc:	Andreas Färber <afaerber@...e.de>,
	linux-samsung-soc <linux-samsung-soc@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	Vincent Palatin <vpalatin@...omium.org>,
	Javier Martinez Canillas <javier.martinez@...labora.co.uk>,
	Tomasz Figa <t.figa@...sung.com>,
	Ben Dooks <ben-linux@...ff.org>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Russell King <linux@....linux.org.uk>,
	open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v7] ARM: dts: Prepare node labels for exynos5250

Kukjin,

On Fri, Aug 22, 2014 at 3:49 AM, Kukjin Kim <kgene.kim@...sung.com> wrote:
> Andreas Färber wrote:
>>
>> Allows them to be extended by reference.
>>
>> Reviewed-by: Doug Anderson <dianders@...omium.org>
>> Signed-off-by: Andreas Färber <afaerber@...e.de>
>> ---
>>  v6 -> v7:
>>  * Dropped uart* labels (Tomasz Figa)
>>
>>  v6: Split off from Snow/SMDK cleanups (Doug Anderson)
>>
>>  arch/arm/boot/dts/exynos5250.dtsi | 16 ++++++++--------
>>  1 file changed, 8 insertions(+), 8 deletions(-)
>>
>> diff --git a/arch/arm/boot/dts/exynos5250.dtsi b/arch/arm/boot/dts/exynos5250.dtsi
>> index 492e1eff37bd..42eafd19cfb2 100644
>> --- a/arch/arm/boot/dts/exynos5250.dtsi
>> +++ b/arch/arm/boot/dts/exynos5250.dtsi
>> @@ -218,7 +218,7 @@
>>               clock-names = "fimg2d";
>>       };
>>
>> -     codec@...00000 {
>> +     mfc: codec@...00000 {
>>               compatible = "samsung,mfc-v6";
>>               reg = <0x11000000 0x10000>;
>>               interrupts = <0 96 0>;
>> @@ -227,7 +227,7 @@
>>               clock-names = "mfc";
>>       };
>>
>> -     rtc@...E0000 {
>> +     rtc: rtc@...E0000 {
>>               clocks = <&clock CLK_RTC>;
>>               clock-names = "rtc";
>>               status = "disabled";
>> @@ -261,7 +261,7 @@
>>               clock-names = "uart", "clk_uart_baud0";
>>       };
>>
>> -     sata@...F0000 {
>> +     sata: sata@...F0000 {
>>               compatible = "snps,dwc-ahci";
>>               samsung,sata-freq = <66>;
>>               reg = <0x122F0000 0x1ff>;
>> @@ -573,7 +573,7 @@
>>               #phy-cells = <1>;
>>       };
>>
>> -     usb@...10000 {
>> +     ehci: usb@...10000 {
>
> I'm not sure which one is recommended between above and "ehci: ehci@...10000 {"

My understanding is that more generic names should be used for node
names.  AKA: "usb" and not "ehci".  "mmc" and not "dwmmc".

In another thread I was pointed at ePAPR
<http://www.power.org/resources/downloads/Power_ePAPR_APPROVED_v1.0.pdf>:

The name of a node should be somewhat generic, reflecting the function
of the device and not its precise programming model.


>> -     hdmi {
>> +     hdmi: hdmi {
>
> Should be
>
> +       hdmi: hdmi@...30000 { ?

Seems like that should be a followon patch.
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