Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758597AbcK3Rgx (ORCPT ); Wed, 30 Nov 2016 12:36:53 -0500 Received: from exsmtp01.microchip.com ([198.175.253.37]:47051 "EHLO email.microchip.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1758533AbcK3Rgv (ORCPT ); Wed, 30 Nov 2016 12:36:51 -0500 From: Nicolas Ferre To: Alexandre Belloni , CC: Boris BREZILLON , Ludovic Desroches , , Nicolas Ferre Subject: [PATCH 1/2] ARM: dts: at91: sama5d4: change DMA allocation for secure peripherals Date: Wed, 30 Nov 2016 18:36:29 +0100 Message-ID: <20161130173630.11944-1-nicolas.ferre@atmel.com> X-Mailer: git-send-email 2.9.0 MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2465 Lines: 70 Some peripherals are "Programmable Secure" but left as "Secure" by default. If tried to be connected to Non-Secure DMA controller, the possibility to leak secure data is prevented so using these peripherals with DMA1 is not possible with this default configuration (MATRIX_SPSELR registers setup by bootloader). Move them to DMA0 which is an "Always-Secure" DMA controller. Signed-off-by: Nicolas Ferre --- arch/arm/boot/dts/sama5d4.dtsi | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/arch/arm/boot/dts/sama5d4.dtsi b/arch/arm/boot/dts/sama5d4.dtsi index 4f60c1b7b137..d3889c9d25a9 100644 --- a/arch/arm/boot/dts/sama5d4.dtsi +++ b/arch/arm/boot/dts/sama5d4.dtsi @@ -854,10 +854,10 @@ compatible = "atmel,at91sam9260-usart"; reg = <0xf8004000 0x100>; interrupts = <27 IRQ_TYPE_LEVEL_HIGH 5>; - dmas = <&dma1 + dmas = <&dma0 (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1) | AT91_XDMAC_DT_PERID(22))>, - <&dma1 + <&dma0 (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1) | AT91_XDMAC_DT_PERID(23))>; dma-names = "tx", "rx"; @@ -938,10 +938,10 @@ compatible = "atmel,sama5d4-i2c"; reg = <0xf8018000 0x4000>; interrupts = <33 IRQ_TYPE_LEVEL_HIGH 6>; - dmas = <&dma1 + dmas = <&dma0 (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1) | AT91_XDMAC_DT_PERID(4))>, - <&dma1 + <&dma0 (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1) | AT91_XDMAC_DT_PERID(5))>; dma-names = "tx", "rx"; @@ -1055,10 +1055,10 @@ compatible = "atmel,at91sam9260-usart"; reg = <0xfc004000 0x100>; interrupts = <28 IRQ_TYPE_LEVEL_HIGH 5>; - dmas = <&dma1 + dmas = <&dma0 (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1) | AT91_XDMAC_DT_PERID(24))>, - <&dma1 + <&dma0 (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1) | AT91_XDMAC_DT_PERID(25))>; dma-names = "tx", "rx"; @@ -1167,10 +1167,10 @@ compatible = "atmel,at91rm9200-spi"; reg = <0xfc01c000 0x100>; interrupts = <39 IRQ_TYPE_LEVEL_HIGH 3>; - dmas = <&dma1 + dmas = <&dma0 (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1) | AT91_XDMAC_DT_PERID(14))>, - <&dma1 + <&dma0 (AT91_XDMAC_DT_MEM_IF(0) | AT91_XDMAC_DT_PER_IF(1) | AT91_XDMAC_DT_PERID(15))>; dma-names = "tx", "rx"; -- 2.9.0