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Mon, 27 Jan 2025 16:43:37 -0500 (EST) X-Mailer: MessagingEngine.com Webmail Interface Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Date: Mon, 27 Jan 2025 21:43:16 +0000 From: "Jiaxun Yang" To: "Gregory CLEMENT" , "Aleksandar Rikalo" , "Thomas Bogendoerfer" , "Rob Herring" , "Krzysztof Kozlowski" , "Conor Dooley" Cc: "Vladimir Kondratiev" , =?UTF-8?Q?Th=C3=A9o_Lebrun?= , "Tawfik Bayouk" , "Thomas Petazzoni" , "linux-mips@vger.kernel.org" , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Message-Id: In-Reply-To: <20250123-cluster-hci-broken-v3-2-8a7ec57cbf68@bootlin.com> References: <20250123-cluster-hci-broken-v3-0-8a7ec57cbf68@bootlin.com> <20250123-cluster-hci-broken-v3-2-8a7ec57cbf68@bootlin.com> Subject: Re: [PATCH v3 2/5] dt-bindings: mips: mips-cm: Add a new compatible string for EyeQ6 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable =E5=9C=A82025=E5=B9=B41=E6=9C=8823=E6=97=A5=E4=B8=80=E6=9C=88 =E4=B8=8A=E5= =8D=8811:01=EF=BC=8CGregory CLEMENT=E5=86=99=E9=81=93=EF=BC=9A > The CM3.5 used on EyeQ6 reports that Hardware Cache Initialization is > complete, but in reality it's not the case. It also incorrectly > indicates that Hardware Cache Initialization is supported. This new > compatible string allows warning about this broken feature that cannot > be detected at runtime. > > Signed-off-by: Gregory CLEMENT > --- > Documentation/devicetree/bindings/mips/mti,mips-cm.yaml | 12 ++++++++= +++- > 1 file changed, 11 insertions(+), 1 deletion(-) > > diff --git a/Documentation/devicetree/bindings/mips/mti,mips-cm.yaml=20 > b/Documentation/devicetree/bindings/mips/mti,mips-cm.yaml > index=20 > 4324b2306535f1bf66c44b1f96be9094ee282041..d129d6382847768dc026336d8d2c= 7328b6b81f9b=20 > 100644 > --- a/Documentation/devicetree/bindings/mips/mti,mips-cm.yaml > +++ b/Documentation/devicetree/bindings/mips/mti,mips-cm.yaml > @@ -19,7 +19,12 @@ maintainers: >=20 > properties: > compatible: > - const: mti,mips-cm > + oneOf: > + - const: mti,mips-cm > + - const: mobileye,eyeq6-cm > + description: > + On EyeQ6 the HCI (Hardware Cache Initialization) informatio= n for > + the L2 cache in multi-cluster configuration is broken. >=20 > reg: > description: > @@ -44,4 +49,9 @@ examples: > compatible =3D "mti,mips-cm"; > reg =3D <0x1bde8000 0x8000>; > }; > + > + - | > + coherency-manager { > + compatible =3D "mobileye,eyeq6-cm"; I think =E2=80=9Cmobileye,eyeq6-cm=E2=80=9D, =E2=80=9Cmti,mips-cm=E2=80=9D= would describe the hardware better as eyeq6=E2=80=99s CM is just a spec= ial variant of mips-cm. But I=E2=80=99m fine with leaving it as is. Thanks > + }; > ... > > --=20 > 2.45.2 --=20 - Jiaxun