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Mon, 10 Feb 2025 10:49:26 -0800 (PST) Received: from prasmi.Home ([2a06:5906:61b:2d00:b833:1deb:a929:b461]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-439452533ecsm22911525e9.0.2025.02.10.10.49.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 10 Feb 2025 10:49:25 -0800 (PST) From: Prabhakar X-Google-Original-From: Prabhakar To: Geert Uytterhoeven , Michael Turquette , Stephen Boyd , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Wim Van Sebroeck , Guenter Roeck , Magnus Damm , Wolfram Sang Cc: linux-renesas-soc@vger.kernel.org, linux-clk@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-watchdog@vger.kernel.org, Prabhakar , Biju Das , Fabrizio Castro , Lad Prabhakar Subject: [PATCH v4 0/9] Add support to configure CPG block for watchdog on RZ/V2H(P) and RZ/G3E SoCs Date: Mon, 10 Feb 2025 18:49:01 +0000 Message-ID: <20250210184910.161780-1-prabhakar.mahadev-lad.rj@bp.renesas.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-renesas-soc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Lad Prabhakar Hi All, This patch series adds SYSCON support to configure and retrieve boot status information from the CPG block for the RZ/V2H(P) and RZ/G3E SoCs. Summary of Changes, Clock: Add syscon compatible support to the CPG block in bindings and device trees. Watchdog: Document the renesas,r9a09g057-syscon-wdt-errorrst property. Update the watchdog driver to fetch and report boot status via Error Reset Registers (CPG_ERROR_RSTm) and configure the CPG_ERRORRST_SEL2 register. Device Tree: -Add the syscon property to CPG nodes in R9A09G057 and R9A09G047 SoC DTSI. -Add the renesas,syscon-cpg-error-rst property to WDT nodes in R9A09G057 and R9A09G047 SoC DTSI. v3->v4 - Added support to configure CPG_ERRORRST_SEL2 register - Updated commit messages v2->v3 - Updated comment section to mention there aren't any ABI breakages with this patch series. Cheers, Prabhakar Lad Prabhakar (9): dt-bindings: clock: rzv2h-cpg: Add syscon compatible for CPG clk: renesas: Kconfig: Select MFD_SYSCON for RZ/V2H(P) family driver arm64: dts: renesas: r9a09g047: Add `syscon` compatible for CPG node arm64: dts: renesas: r9a09g057: Add `syscon` compatible for CPG node dt-bindings: watchdog: renesas: Document `renesas,syscon-cpg-error-rst` property watchdog: rzv2h_wdt: Add support to retrieve the bootstatus information watchdog: rzv2h_wdt: Configure CPG_ERRORRST_SEL2 register arm64: dts: renesas: r9a09g057: Add `renesas,syscon-cpg-error-rst` property to WDT node arm64: dts: renesas: r9a09g047: Add `renesas,syscon-cpg-error-rst` property to WDT node .../bindings/clock/renesas,rzv2h-cpg.yaml | 10 ++-- .../bindings/watchdog/renesas,wdt.yaml | 17 ++++++ arch/arm64/boot/dts/renesas/r9a09g047.dtsi | 5 +- arch/arm64/boot/dts/renesas/r9a09g057.dtsi | 6 ++- drivers/clk/renesas/Kconfig | 1 + drivers/watchdog/rzv2h_wdt.c | 54 +++++++++++++++++++ 6 files changed, 87 insertions(+), 6 deletions(-)