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From: Miquel Raynal <miquel.raynal@bootlin.com>
To: Geert Uytterhoeven <geert+renesas@glider.be>,
	Magnus Damm <magnus.damm@gmail.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Jiri Slaby <jirislaby@kernel.org>
Cc: Miquel Raynal <miquel.raynal@bootlin.com>,
	Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
	linux-renesas-soc@vger.kernel.org, linux-serial@vger.kernel.org,
	Milan Stevanovic <milan.stevanovic@se.com>,
	Jimmy Lalande <jimmy.lalande@se.com>,
	Pascal Eberhard <pascal.eberhard@se.com>,
	Thomas Petazzoni <thomas.petazzoni@bootlin.com>,
	Herve Codina <herve.codina@bootlin.com>,
	Clement Leger <clement.leger@bootlin.com>
Subject: [PATCH v3 10/10] ARM: dts: r9a06g032: Fill the UART DMA properties
Date: Tue, 29 Mar 2022 17:24:30 +0200	[thread overview]
Message-ID: <20220329152430.756947-11-miquel.raynal@bootlin.com> (raw)
In-Reply-To: <20220329152430.756947-1-miquel.raynal@bootlin.com>

UART 0 to 2 do not have DMA support, while UART 3 to 7 do.

Fill the "dmas" and "dma-names" properties for each of these nodes.

Please mind that these nodes go through the dmamux node which will
redirect the requests to the right DMA controller. The first 4 cells of
the "dmas" properties will be transferred as-is to the DMA
controllers. The last 2 cells are consumed by the dmamux. Which means
cell 0 and 4 are almost redundant, one giving the controller request ID
and the other the dmamux channel which is a 1:1 translation of the
request IDs, shifted by 16 when pointing to the second DMA controller.

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
---
 arch/arm/boot/dts/r9a06g032.dtsi | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/arch/arm/boot/dts/r9a06g032.dtsi b/arch/arm/boot/dts/r9a06g032.dtsi
index 804f2d6f416f..aa447e2622e0 100644
--- a/arch/arm/boot/dts/r9a06g032.dtsi
+++ b/arch/arm/boot/dts/r9a06g032.dtsi
@@ -128,6 +128,9 @@ uart3: serial@50000000 {
 			reg-io-width = <4>;
 			clocks = <&sysctrl R9A06G032_CLK_UART3>, <&sysctrl R9A06G032_HCLK_UART3>;
 			clock-names = "baudclk", "apb_pclk";
+			dmas =  <&dmamux 0 0 0 0 0 1>,
+				<&dmamux 1 0 0 0 1 1>;
+			dma-names = "rx", "tx";
 			status = "disabled";
 		};
 
@@ -139,6 +142,9 @@ uart4: serial@50001000 {
 			reg-io-width = <4>;
 			clocks = <&sysctrl R9A06G032_CLK_UART4>, <&sysctrl R9A06G032_HCLK_UART4>;
 			clock-names = "baudclk", "apb_pclk";
+			dmas =  <&dmamux 2 0 0 0 2 1>,
+				<&dmamux 3 0 0 0 3 1>;
+			dma-names = "rx", "tx";
 			status = "disabled";
 		};
 
@@ -150,6 +156,9 @@ uart5: serial@50002000 {
 			reg-io-width = <4>;
 			clocks = <&sysctrl R9A06G032_CLK_UART5>, <&sysctrl R9A06G032_HCLK_UART5>;
 			clock-names = "baudclk", "apb_pclk";
+			dmas =  <&dmamux 4 0 0 0 4 1>,
+				<&dmamux 5 0 0 0 5 1>;
+			dma-names = "rx", "tx";
 			status = "disabled";
 		};
 
@@ -161,6 +170,9 @@ uart6: serial@50003000 {
 			reg-io-width = <4>;
 			clocks = <&sysctrl R9A06G032_CLK_UART6>, <&sysctrl R9A06G032_HCLK_UART6>;
 			clock-names = "baudclk", "apb_pclk";
+			dmas =  <&dmamux 6 0 0 0 6 1>,
+				<&dmamux 7 0 0 0 7 1>;
+			dma-names = "rx", "tx";
 			status = "disabled";
 		};
 
@@ -172,6 +184,9 @@ uart7: serial@50004000 {
 			reg-io-width = <4>;
 			clocks = <&sysctrl R9A06G032_CLK_UART7>, <&sysctrl R9A06G032_HCLK_UART7>;
 			clock-names = "baudclk", "apb_pclk";
+			dmas =  <&dmamux 4 0 0 0 20 1>,
+				<&dmamux 5 0 0 0 21 1>;
+			dma-names = "rx", "tx";
 			status = "disabled";
 		};
 
-- 
2.27.0


  parent reply	other threads:[~2022-03-29 15:25 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-03-29 15:24 [PATCH v3 00/10] serial: 8250: dw: RZN1 DMA support Miquel Raynal
2022-03-29 15:24 ` [PATCH v3 01/10] serial: 8250: dw: Move the per-device structure Miquel Raynal
2022-03-29 15:24 ` [PATCH v3 02/10] serial: 8250: dw: Use the device API Miquel Raynal
2022-03-29 15:24 ` [PATCH v3 03/10] serial: 8250: dw: Change the quirks type to unsigned int Miquel Raynal
2022-03-29 15:43   ` Andy Shevchenko
2022-03-29 15:58   ` Geert Uytterhoeven
2022-03-29 16:06     ` Miquel Raynal
2022-03-29 15:24 ` [PATCH v3 04/10] serial: 8250: dw: Create a more generic platform data structure Miquel Raynal
2022-03-29 15:51   ` Andy Shevchenko
2022-03-29 15:24 ` [PATCH v3 05/10] serial: 8250: dw: Allow to use a fallback CPR value if not synthesized Miquel Raynal
2022-03-29 15:49   ` Andy Shevchenko
2022-03-29 15:24 ` [PATCH v3 06/10] serial: 8250: dma: Allow driver operations before starting DMA transfers Miquel Raynal
2022-03-29 15:24 ` [PATCH v3 07/10] serial: 8250: dw: Introduce an rx_timeout variable in the IRQ path Miquel Raynal
2022-03-29 15:24 ` [PATCH v3 08/10] serial: 8250: dw: Add support for DMA flow controlling devices Miquel Raynal
2022-03-29 15:58   ` Andy Shevchenko
2022-03-29 15:24 ` [PATCH v3 09/10] serial: 8250: dw: Improve RZN1 support Miquel Raynal
2022-03-29 16:00   ` Andy Shevchenko
2022-03-29 15:24 ` Miquel Raynal [this message]
2022-03-29 16:01 ` [PATCH v3 00/10] serial: 8250: dw: RZN1 DMA support Andy Shevchenko
2022-03-29 16:10   ` Miquel Raynal

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