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Fri, 09 Jan 2026 21:20:18 -0800 (PST) Received: from [127.0.1.1] ([45.8.220.108]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2a3e3cc88cdsm118208265ad.73.2026.01.09.21.20.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 09 Jan 2026 21:20:17 -0800 (PST) From: Guodong Xu Date: Sat, 10 Jan 2026 13:18:20 +0800 Subject: [PATCH v4 08/11] dt-bindings: riscv: Add Ssccptr, Sscounterenw, Sstvala, Sstvecd, Ssu64xl MIME-Version: 1.0 Message-Id: <20260110-k3-basic-dt-v4-8-d492f3a30ffa@riscstar.com> References: <20260110-k3-basic-dt-v4-0-d492f3a30ffa@riscstar.com> In-Reply-To: <20260110-k3-basic-dt-v4-0-d492f3a30ffa@riscstar.com> To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , Yixun Lan , Daniel Lezcano , Thomas Gleixner , Samuel Holland , Anup Patel , Greg Kroah-Hartman , Jiri Slaby , Lubomir Rintel , Yangyu Chen Cc: Paul Walmsley , Conor Dooley , Heinrich Schuchardt , Kevin Meng Zhang , Anup Patel , Andrew Jones , devicetree@vger.kernel.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, spacemit@lists.linux.dev, linux-serial@vger.kernel.org, Guodong Xu X-Mailer: b4 0.14.3 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260109_212020_574323_44E513D1 X-CRM114-Status: GOOD ( 10.11 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org Add descriptions for five new extensions: Ssccptr, Sscounterenw, Sstvala, Sstvecd, and Ssu64xl. These extensions are ratified in RISC-V Profiles Version 1.0 (commit b1d806605f87 "Updated to ratified state."). They are introduced as new extension names for existing features and regulate implementation details for RISC-V Profile compliance. According to RISC-V Profiles Version 1.0 and RVA23 Profiles Version 1.0, their requirement status are: - Ssccptr: Mandatory in RVA20S64, RVA22S64, RVA23S64 - Sscounterenw: Mandatory in RVA22S64, RVA23S64 - Sstvala: Mandatory in RVA20S64, RVA22S64, RVA23S64 - Sstvecd: Mandatory in RVA20S64, RVA22S64, RVA23S64 - Ssu64xl: Optional in RVA20S64, RVA22S64; Mandatory in RVA23S64 Signed-off-by: Guodong Xu --- v4: No change. v3: No change. v2: New patch. --- .../devicetree/bindings/riscv/extensions.yaml | 32 ++++++++++++++++++++++ 1 file changed, 32 insertions(+) diff --git a/Documentation/devicetree/bindings/riscv/extensions.yaml b/Documentation/devicetree/bindings/riscv/extensions.yaml index 345624326e9f..900270e8d22e 100644 --- a/Documentation/devicetree/bindings/riscv/extensions.yaml +++ b/Documentation/devicetree/bindings/riscv/extensions.yaml @@ -161,12 +161,26 @@ properties: behavioural changes to interrupts as frozen at commit ccbddab ("Merge pull request #42 from riscv/jhauser-2023-RC4") of riscv-aia. + - const: ssccptr + description: | + The standard Ssccptr extension for main memory (cacheability and + coherence) hardware page-table reads, as ratified in RISC-V + Profiles Version 1.0, with commit b1d806605f87 ("Updated to + ratified state.") + - const: sscofpmf description: | The standard Sscofpmf supervisor-level extension for count overflow and mode-based filtering as ratified at commit 01d1df0 ("Add ability to manually trigger workflow. (#2)") of riscv-count-overflow. + - const: sscounterenw + description: | + The standard Sscounterenw extension for support writable enables + in scounteren for any supported counter, as ratified in RISC-V + Profiles Version 1.0, with commit b1d806605f87 ("Updated to + ratified state.") + - const: ssnpm description: | The standard Ssnpm extension for next-mode pointer masking as @@ -179,6 +193,24 @@ properties: ratified at commit 3f9ed34 ("Add ability to manually trigger workflow. (#2)") of riscv-time-compare. + - const: sstvala + description: | + The standard Sstvala extension for stval provides all needed values + as ratified in RISC-V Profiles Version 1.0, with commit b1d806605f87 + ("Updated to ratified state.") + + - const: sstvecd + description: | + The standard Sstvecd extension for stvec supports Direct mode as + ratified in RISC-V Profiles Version 1.0, with commit b1d806605f87 + ("Updated to ratified state.") + + - const: ssu64xl + description: | + The standard Ssu64xl extension for UXLEN=64 must be supported, as + ratified in RISC-V Profiles Version 1.0, with commit b1d806605f87 + ("Updated to ratified state.") + - const: svade description: | The standard Svade supervisor-level extension for SW-managed PTE A/D -- 2.43.0 _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv