From: "H. Nikolaus Schaller" <hns@goldelico.com>
To: Tony Lindgren <tony@atomide.com>
Cc: "Paul Cercueil" <paul@crapouillou.net>,
"David Airlie" <airlied@linux.ie>,
"Daniel Vetter" <daniel@ffwll.ch>,
"Rob Herring" <robh+dt@kernel.org>,
"Mark Rutland" <mark.rutland@arm.com>,
"Benoît Cousson" <bcousson@baylibre.com>,
"Ralf Baechle" <ralf@linux-mips.org>,
"Paul Burton" <paulburton@kernel.org>,
"James Hogan" <jhogan@kernel.org>,
"Kukjin Kim" <kgene@kernel.org>,
"Krzysztof Kozlowski" <krzk@kernel.org>,
"Maxime Ripard" <mripard@kernel.org>,
"Chen-Yu Tsai" <wens@csie.org>,
"Thomas Bogendoerfer" <tsbogend@alpha.franken.de>,
"Jonathan Bakker" <xc-racer2@live.ca>,
"Philipp Rossak" <embed3d@gmail.com>,
dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-omap@vger.kernel.org,
openpvrsgx-devgroup@letux.org, letux-kernel@openphoenux.org,
kernel@pyra-handheld.com, linux-mips@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-samsung-soc@vger.kernel.org
Subject: Re: [PATCH v7 01/12] dt-bindings: add img,pvrsgx.yaml for Imagination GPUs
Date: Fri, 15 May 2020 09:58:31 +0200 [thread overview]
Message-ID: <9A411DCE-A882-4868-9265-532D79922F6E@goldelico.com> (raw)
In-Reply-To: <20200503150143.GG37466@atomide.com>
Hi Tony,
> Am 03.05.2020 um 17:01 schrieb Tony Lindgren <tony@atomide.com>:
>
> * Paul Cercueil <paul@crapouillou.net> [200503 14:19]:
>> You have a new SoC with a SGX, and you only need to enable one clock to get
>> it to work. So you create a devicetree node which receives only one clock.
>>
>> Turns out, that the bootloader was enabling the other 3 clocks, and since
>> the last release, it doesn't anymore. You're left with having to support a
>> broken devicetree.
>>
>> That's the kind of problem that can be easily avoided by enforcing the
>> number of clocks that have to be provided.
>
> The number of clocks depends on how it's wired for the SoC.
>
> On omaps, there's are no controls for additinoal SGX clocks. Sure some
> of the clocks may be routed to multple places internally by the wrapper
> module. But we have no control over that.
>
> If we wanted to specify just the "fck" clock on omaps, then we can
> do it with something like this:
>
> allOf:
> - if:
> properites:
> compatible:
> enum:
> - "ti,omap4-sgx544-112"
> - "ti,omap5-sgx544-116"
> - "ti,dra7-sgx544-116"
> then:
> properties:
> clocks:
> minItems: 1
> maxItems: 1
>
> clock-names:
> const: fck
>
> required:
> - clocks
> - clock-names
will add to v8 of this series as a separate patch on top of the
general one. This should make it easier to have a focussed discussion
and revert/bisect if something goes wrong.
BR and thanks,
Nikolaus
next prev parent reply other threads:[~2020-05-15 7:58 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-24 20:34 [PATCH v7 00/12] ARM/MIPS: DTS: add child nodes describing the PVRSGX GPU present in some OMAP SoC and JZ4780 (and many more) H. Nikolaus Schaller
2020-04-24 20:34 ` [PATCH v7 01/12] dt-bindings: add img,pvrsgx.yaml for Imagination GPUs H. Nikolaus Schaller
2020-04-24 20:43 ` H. Nikolaus Schaller
2020-04-26 13:11 ` Paul Cercueil
2020-05-02 20:26 ` H. Nikolaus Schaller
2020-05-03 12:52 ` Paul Cercueil
2020-05-03 13:31 ` H. Nikolaus Schaller
2020-05-03 14:18 ` Paul Cercueil
2020-05-03 15:01 ` Tony Lindgren
2020-05-15 7:58 ` H. Nikolaus Schaller [this message]
2020-05-03 16:41 ` H. Nikolaus Schaller
2020-05-15 7:18 ` H. Nikolaus Schaller
2020-04-26 19:36 ` Philipp Rossak
2020-04-26 20:59 ` H. Nikolaus Schaller
2020-05-05 15:53 ` Rob Herring
2020-05-15 7:59 ` H. Nikolaus Schaller
2020-04-24 20:34 ` [PATCH v7 02/12] ARM: DTS: am33xx: add sgx gpu child node H. Nikolaus Schaller
2020-04-24 20:34 ` [PATCH v7 03/12] ARM: DTS: am3517: " H. Nikolaus Schaller
2020-04-24 20:34 ` [PATCH v7 04/12] ARM: DTS: omap34xx: " H. Nikolaus Schaller
2020-04-24 20:34 ` [PATCH v7 05/12] ARM: DTS: omap36xx: " H. Nikolaus Schaller
2020-04-24 20:34 ` [PATCH v7 06/12] ARM: DTS: omap4: " H. Nikolaus Schaller
2020-04-26 12:50 ` Paul Cercueil
2020-04-28 7:59 ` H. Nikolaus Schaller
2020-04-24 20:34 ` [PATCH v7 07/12] ARM: DTS: omap5: " H. Nikolaus Schaller
2020-04-24 20:34 ` [PATCH v7 08/12] arm: dts: s5pv210: Add node for SGX 540 H. Nikolaus Schaller
2020-04-26 12:56 ` Paul Cercueil
2020-04-26 14:57 ` Jonathan Bakker
2020-04-27 15:46 ` Krzysztof Kozlowski
2020-04-28 21:39 ` Jonathan Bakker
2020-04-28 22:58 ` Jonathan Bakker
2020-04-29 8:47 ` Maxime Ripard
2020-04-29 12:26 ` Paul Cercueil
2020-04-24 20:34 ` [PATCH v7 09/12] ARM: dts: sun6i: a31: add sgx gpu child node H. Nikolaus Schaller
2020-04-26 12:53 ` Paul Cercueil
2020-04-26 19:31 ` Philipp Rossak
2020-04-24 20:34 ` [PATCH v7 10/12] ARM: dts: sun6i: a31s: " H. Nikolaus Schaller
2020-04-24 20:34 ` [PATCH v7 11/12] ARM: dts: sun8i: a83t: " H. Nikolaus Schaller
2020-04-24 20:34 ` [PATCH v7 12/12] MIPS: DTS: jz4780: add sgx gpu node H. Nikolaus Schaller
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