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[174.29.1.49]) by smtp.gmail.com with ESMTPSA id 5614622812f47-567a9f9115csm27060b6e.11.2026.11.03.13.40.12 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 03 Nov 2026 13:40:13 -0800 (PST) From: James Hilliard Date: Tue, 03 Nov 2026 14:40:01 -0700 Subject: [PATCH v7 08/12] arm64: dts: allwinner: h616: describe the UART integration 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: <20261103-submit-h616-uart-fifo-v1-v7-8-c9e248d685c1@gmail.com> References: <20261103-submit-h616-uart-fifo-v1-v7-0-c9e248d685c1@gmail.com> In-Reply-To: <20261103-submit-h616-uart-fifo-v1-v7-0-c9e248d685c1@gmail.com> To: Andy Shevchenko , =?utf-8?q?Ilpo_J=C3=A4rvinen?= , Greg Kroah-Hartman , Jiri Slaby , Rob Herring , Krzysztof Kozlowski , Conor Dooley , 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 Identify the H616 UART integration on each of the six controllers. The specific compatible selects its fixed FIFO depth and integration-specific register setup. The driver uses that depth to derive the shared DesignWare receive thresholds. Retain snps,dw-apb-uart as the generic fallback. H618 includes this DTSI and uses the same UART integration. Signed-off-by: James Hilliard --- arch/arm64/boot/dts/allwinner/sun50i-h616.dtsi | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h616.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-h616.dtsi index c6b3a3f8359a..b4b2f85726e0 100644 --- a/arch/arm64/boot/dts/allwinner/sun50i-h616.dtsi +++ b/arch/arm64/boot/dts/allwinner/sun50i-h616.dtsi @@ -550,7 +550,7 @@ mmc2: mmc@4022000 { }; uart0: serial@5000000 { - compatible = "snps,dw-apb-uart"; + compatible = "allwinner,sun50i-h616-uart", "snps,dw-apb-uart"; reg = <0x05000000 0x400>; interrupts = ; reg-shift = <2>; @@ -563,7 +563,7 @@ uart0: serial@5000000 { }; uart1: serial@5000400 { - compatible = "snps,dw-apb-uart"; + compatible = "allwinner,sun50i-h616-uart", "snps,dw-apb-uart"; reg = <0x05000400 0x400>; interrupts = ; reg-shift = <2>; @@ -576,7 +576,7 @@ uart1: serial@5000400 { }; uart2: serial@5000800 { - compatible = "snps,dw-apb-uart"; + compatible = "allwinner,sun50i-h616-uart", "snps,dw-apb-uart"; reg = <0x05000800 0x400>; interrupts = ; reg-shift = <2>; @@ -589,7 +589,7 @@ uart2: serial@5000800 { }; uart3: serial@5000c00 { - compatible = "snps,dw-apb-uart"; + compatible = "allwinner,sun50i-h616-uart", "snps,dw-apb-uart"; reg = <0x05000c00 0x400>; interrupts = ; reg-shift = <2>; @@ -602,7 +602,7 @@ uart3: serial@5000c00 { }; uart4: serial@5001000 { - compatible = "snps,dw-apb-uart"; + compatible = "allwinner,sun50i-h616-uart", "snps,dw-apb-uart"; reg = <0x05001000 0x400>; interrupts = ; reg-shift = <2>; @@ -615,7 +615,7 @@ uart4: serial@5001000 { }; uart5: serial@5001400 { - compatible = "snps,dw-apb-uart"; + compatible = "allwinner,sun50i-h616-uart", "snps,dw-apb-uart"; reg = <0x05001400 0x400>; interrupts = ; reg-shift = <2>; -- 2.53.0