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Groups > linux.kernel > #1533465
| From | Nicolas Ferre <nicolas.ferre@atmel.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH 1/2] ARM: dts: at91: sama5d4: change DMA allocation for secure peripherals |
| Date | 2016-11-30 18:40 +0100 |
| Message-ID | <sJh1n-BB-9@gated-at.bofh.it> (permalink) |
| Organization | linux.* mail to news gateway |
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 <nicolas.ferre@atmel.com> --- 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
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[PATCH 1/2] ARM: dts: at91: sama5d4: change DMA allocation for secure peripherals Nicolas Ferre <nicolas.ferre@atmel.com> - 2016-11-30 18:40 +0100 Re: [PATCH 1/2] ARM: dts: at91: sama5d4: change DMA allocation for secure peripherals Alexandre Belloni <alexandre.belloni@free-electrons.com> - 2016-12-07 10:00 +0100
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