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[9.244.8.156]) by smtp.gmail.com with ESMTPSA id 46e09a7af769-7f3c9cf3b0csm256006a34.21.2026.08.12.13.15.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 12 Aug 2026 13:15:04 -0700 (PDT) From: Enzo Adriano To: Andre Przywara , Michael Turquette , Stephen Boyd , Chen-Yu Tsai Cc: Brian Masney , Jernej Skrabec , Samuel Holland , linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev, linux-kernel@vger.kernel.org, Enzo Adriano Subject: [PATCH RFT 0/2] clk: sunxi-ng: fix A523/T527 single-divider clocks Date: Wed, 12 Aug 2026 16:15:00 -0400 Message-ID: <20260812201502.264919-1-enzo.adriano.code@gmail.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260723004856.55158e84@ryzen.lan> References: <20260723004856.55158e84@ryzen.lan> Precedence: bulk X-Mailing-List: linux-clk@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Andre asked whether we would post the A523/T527 conversions for the clocks whose ccu_mp descriptors declare one divider field with width zero. This series implements those conversions. Patch 1 adds a feature-aware M-divider helper so M-only clocks can retain the CCU update-bit handling. Patch 2 converts MBUS, IOMMU, and DRAM to that M-only class and converts HSTIMER0-5 and R-TIMER0-2 to the existing P-only class. I do not have matching A523/T527 hardware, so this is deliberately an RFT series and carries no Tested-by claim. The series has passed semantic and register-bit preservation models, KUnit tests, strict checkpatch, sparse, GCC and Clang builds, full arm64 Image/modules/DTB builds, reproducibility checks, and hostile review. It also applies and builds cleanly together with the current A523/T527 GPU clock-model v2 series. not tested on A523/T527 hardware; testing on actual hardware is needed. In particular, testing of clock rate changes and affected users of MBUS, IOMMU, DRAM, HSTIMER0-5, and R-TIMER0-2 would be appreciated. --- Enzo Adriano (2): clk: sunxi-ng: add feature-aware M divider helper clk: sunxi-ng: a523: use single-divider clock helpers drivers/clk/sunxi-ng/ccu-sun55i-a523-r.c | 37 +++--- drivers/clk/sunxi-ng/ccu-sun55i-a523.c | 136 +++++++++++------------ drivers/clk/sunxi-ng/ccu_div.h | 18 ++- 3 files changed, 96 insertions(+), 95 deletions(-) base-commit: 8cdeaa50eae8dad34885515f62559ee83e7e8dda -- 2.53.0