From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752456AbdC0Je7 (ORCPT ); Mon, 27 Mar 2017 05:34:59 -0400 Received: from mail.free-electrons.com ([62.4.15.54]:57243 "EHLO mail.free-electrons.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752427AbdC0Jdy (ORCPT ); Mon, 27 Mar 2017 05:33:54 -0400 From: Alexandre Belloni To: stable@vger.kernel.org Cc: Nicolas Ferre , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Kevin Hilman , Nicolas Ferre , Alexandre Belloni Subject: [PATCH] ARM: dts: at91: sama5d2: add dma properties to UART nodes Date: Mon, 27 Mar 2017 11:09:33 +0200 Message-Id: <20170327090933.18312-1-alexandre.belloni@free-electrons.com> X-Mailer: git-send-email 2.11.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Nicolas Ferre commit b1708b72a0959a032cd2eebb77fa9086ea3e0c84 upstream The dmas/dma-names properties are added to the UART nodes. Note that additional properties are needed to enable them at the board level: check bindings for details. Cc: # 4.4.x Signed-off-by: Nicolas Ferre Signed-off-by: Alexandre Belloni --- Hi, Commit 6b1d7b6f54c7deb80a00b9271dc3abb7a5674b65 triggered a bug in the atmel tty driver when the dma channels are not specified. It is safe to backport b1708b72a0959a032cd2eebb77fa9086ea3e0c84, defining the uart dma channels to fix it. arch/arm/boot/dts/sama5d2.dtsi | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) diff --git a/arch/arm/boot/dts/sama5d2.dtsi b/arch/arm/boot/dts/sama5d2.dtsi index 3f750f6170f2..82d0c19e9720 100644 --- a/arch/arm/boot/dts/sama5d2.dtsi +++ b/arch/arm/boot/dts/sama5d2.dtsi @@ -880,6 +880,13 @@ compatible = "atmel,at91sam9260-usart"; reg = <0xf801c000 0x100>; interrupts = <24 IRQ_TYPE_LEVEL_HIGH 7>; + dmas = <&dma0 + (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1) | + AT91_XDMAC_DT_PERID(35))>, + <&dma0 + (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1) | + AT91_XDMAC_DT_PERID(36))>; + dma-names = "tx", "rx"; clocks = <&uart0_clk>; clock-names = "usart"; status = "disabled"; @@ -889,6 +896,13 @@ compatible = "atmel,at91sam9260-usart"; reg = <0xf8020000 0x100>; interrupts = <25 IRQ_TYPE_LEVEL_HIGH 7>; + dmas = <&dma0 + (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1) | + AT91_XDMAC_DT_PERID(37))>, + <&dma0 + (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1) | + AT91_XDMAC_DT_PERID(38))>; + dma-names = "tx", "rx"; clocks = <&uart1_clk>; clock-names = "usart"; status = "disabled"; @@ -898,6 +912,13 @@ compatible = "atmel,at91sam9260-usart"; reg = <0xf8024000 0x100>; interrupts = <26 IRQ_TYPE_LEVEL_HIGH 7>; + dmas = <&dma0 + (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1) | + AT91_XDMAC_DT_PERID(39))>, + <&dma0 + (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1) | + AT91_XDMAC_DT_PERID(40))>; + dma-names = "tx", "rx"; clocks = <&uart2_clk>; clock-names = "usart"; status = "disabled"; @@ -1016,6 +1037,13 @@ compatible = "atmel,at91sam9260-usart"; reg = <0xfc008000 0x100>; interrupts = <27 IRQ_TYPE_LEVEL_HIGH 7>; + dmas = <&dma0 + (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1) | + AT91_XDMAC_DT_PERID(41))>, + <&dma0 + (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1) | + AT91_XDMAC_DT_PERID(42))>; + dma-names = "tx", "rx"; clocks = <&uart3_clk>; clock-names = "usart"; status = "disabled"; @@ -1024,6 +1052,13 @@ uart4: serial@fc00c000 { compatible = "atmel,at91sam9260-usart"; reg = <0xfc00c000 0x100>; + dmas = <&dma0 + (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1) | + AT91_XDMAC_DT_PERID(43))>, + <&dma0 + (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1) | + AT91_XDMAC_DT_PERID(44))>; + dma-names = "tx", "rx"; interrupts = <28 IRQ_TYPE_LEVEL_HIGH 7>; clocks = <&uart4_clk>; clock-names = "usart"; -- 2.11.0