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[174.29.1.49]) by smtp.gmail.com with ESMTPSA id 46e09a7af769-850fb0741c9sm12093328a34.10.2026.10.27.16.05.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 27 Oct 2026 16:05:47 -0700 (PDT) From: James Hilliard Date: Tue, 27 Oct 2026 17:05:31 -0600 Subject: [PATCH v4 3/5] dt-bindings: serial: snps-dw-apb-uart: add Allwinner H616 X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20261027-submit-h616-uart-fifo-v1-v4-3-d37e018fd0a6@gmail.com> References: <20261027-submit-h616-uart-fifo-v1-v4-0-d37e018fd0a6@gmail.com> In-Reply-To: <20261027-submit-h616-uart-fifo-v1-v4-0-d37e018fd0a6@gmail.com> To: Greg Kroah-Hartman , Jiri Slaby , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Andy Shevchenko , =?utf-8?q?Ilpo_J=C3=A4rvinen?= , Chen-Yu Tsai , Jernej Skrabec , Samuel Holland Cc: linux-kernel@vger.kernel.org, linux-serial@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev, James Hilliard X-Mailer: b4 0.15.2 The H616 UART has 256-byte transmit and receive FIFOs, but its DesignWare component parameter register does not report the FIFO depth. Its optional register layout also differs from the generic DesignWare integration. Add a specific compatible to identify this fixed configuration, retaining snps,dw-apb-uart as a fallback. Signed-off-by: James Hilliard --- Documentation/devicetree/bindings/serial/snps-dw-apb-uart.yaml | 1 + 1 file changed, 1 insertion(+) diff --git a/Documentation/devicetree/bindings/serial/snps-dw-apb-uart.yaml b/Documentation/devicetree/bindings/serial/snps-dw-apb-uart.yaml index e2ca126d58ba..fc1289073241 100644 --- a/Documentation/devicetree/bindings/serial/snps-dw-apb-uart.yaml +++ b/Documentation/devicetree/bindings/serial/snps-dw-apb-uart.yaml @@ -60,6 +60,7 @@ properties: - const: renesas,rzn1-uart - items: - enum: + - allwinner,sun50i-h616-uart - anlogic,dr1v90-uart - brcm,bcm11351-dw-apb-uart - brcm,bcm21664-dw-apb-uart -- 2.53.0