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| author | Amelie Delaunay <amelie.delaunay@foss.st.com> | 2024-10-16 15:39:59 +0300 |
|---|---|---|
| committer | Alexandre Torgue <alexandre.torgue@foss.st.com> | 2024-10-29 19:07:05 +0300 |
| commit | 1e110e44467aeaff537e31bdbf8097fbf6a7c3b1 (patch) | |
| tree | ef13a1ec2659331802351c81df4420a4c85ff598 /arch/arm64 | |
| parent | fab334f4cedc9f30d38b8dc028e1cdbe383dfdd7 (diff) | |
| download | linux-1e110e44467aeaff537e31bdbf8097fbf6a7c3b1.tar.xz | |
arm64: dts: st: add DMA support on U(S)ART instances of stm32mp25
Add dmas and dma-names properties in u(s)art nodes of stm32mp251.dtsi to
enable DMA support.
RX channel requires to prevent pack/unpack feature of DMA to avoid losing
bytes when interrupting RX transfer, as it uses a cyclic buffer.
Signed-off-by: Amelie Delaunay <amelie.delaunay@foss.st.com>
Signed-off-by: Alexandre Torgue <alexandre.torgue@foss.st.com>
Diffstat (limited to 'arch/arm64')
| -rw-r--r-- | arch/arm64/boot/dts/st/stm32mp251.dtsi | 27 | ||||
| -rw-r--r-- | arch/arm64/boot/dts/st/stm32mp257f-ev1.dts | 2 |
2 files changed, 29 insertions, 0 deletions
diff --git a/arch/arm64/boot/dts/st/stm32mp251.dtsi b/arch/arm64/boot/dts/st/stm32mp251.dtsi index 130602eda9a2..9deaf89a9ee8 100644 --- a/arch/arm64/boot/dts/st/stm32mp251.dtsi +++ b/arch/arm64/boot/dts/st/stm32mp251.dtsi @@ -266,6 +266,9 @@ reg = <0x400e0000 0x400>; interrupts = <GIC_SPI 115 IRQ_TYPE_LEVEL_HIGH>; clocks = <&rcc CK_KER_USART2>; + dmas = <&hpdma 11 0x20 0x10012>, + <&hpdma 12 0x20 0x3021>; + dma-names = "rx", "tx"; access-controllers = <&rifsc 32>; status = "disabled"; }; @@ -275,6 +278,9 @@ reg = <0x400f0000 0x400>; interrupts = <GIC_SPI 116 IRQ_TYPE_LEVEL_HIGH>; clocks = <&rcc CK_KER_USART3>; + dmas = <&hpdma 13 0x20 0x10012>, + <&hpdma 14 0x20 0x3021>; + dma-names = "rx", "tx"; access-controllers = <&rifsc 33>; status = "disabled"; }; @@ -284,6 +290,9 @@ reg = <0x40100000 0x400>; interrupts = <GIC_SPI 126 IRQ_TYPE_LEVEL_HIGH>; clocks = <&rcc CK_KER_UART4>; + dmas = <&hpdma 15 0x20 0x10012>, + <&hpdma 16 0x20 0x3021>; + dma-names = "rx", "tx"; access-controllers = <&rifsc 34>; status = "disabled"; }; @@ -293,6 +302,9 @@ reg = <0x40110000 0x400>; interrupts = <GIC_SPI 127 IRQ_TYPE_LEVEL_HIGH>; clocks = <&rcc CK_KER_UART5>; + dmas = <&hpdma 17 0x20 0x10012>, + <&hpdma 18 0x20 0x3021>; + dma-names = "rx", "tx"; access-controllers = <&rifsc 35>; status = "disabled"; }; @@ -393,6 +405,9 @@ reg = <0x40220000 0x400>; interrupts = <GIC_SPI 136 IRQ_TYPE_LEVEL_HIGH>; clocks = <&rcc CK_KER_USART6>; + dmas = <&hpdma 19 0x20 0x10012>, + <&hpdma 20 0x20 0x3021>; + dma-names = "rx", "tx"; access-controllers = <&rifsc 36>; status = "disabled"; }; @@ -438,6 +453,9 @@ reg = <0x402c0000 0x400>; interrupts = <GIC_SPI 150 IRQ_TYPE_LEVEL_HIGH>; clocks = <&rcc CK_KER_UART9>; + dmas = <&hpdma 25 0x20 0x10012>, + <&hpdma 26 0x20 0x3021>; + dma-names = "rx", "tx"; access-controllers = <&rifsc 39>; status = "disabled"; }; @@ -447,6 +465,9 @@ reg = <0x40330000 0x400>; interrupts = <GIC_SPI 114 IRQ_TYPE_LEVEL_HIGH>; clocks = <&rcc CK_KER_USART1>; + dmas = <&hpdma 9 0x20 0x10012>, + <&hpdma 10 0x20 0x3021>; + dma-names = "rx", "tx"; access-controllers = <&rifsc 31>; status = "disabled"; }; @@ -480,6 +501,9 @@ reg = <0x40370000 0x400>; interrupts = <GIC_SPI 148 IRQ_TYPE_LEVEL_HIGH>; clocks = <&rcc CK_KER_UART7>; + dmas = <&hpdma 21 0x20 0x10012>, + <&hpdma 22 0x20 0x3021>; + dma-names = "rx", "tx"; access-controllers = <&rifsc 37>; status = "disabled"; }; @@ -489,6 +513,9 @@ reg = <0x40380000 0x400>; interrupts = <GIC_SPI 149 IRQ_TYPE_LEVEL_HIGH>; clocks = <&rcc CK_KER_UART8>; + dmas = <&hpdma 23 0x20 0x10012>, + <&hpdma 24 0x20 0x3021>; + dma-names = "rx", "tx"; access-controllers = <&rifsc 38>; status = "disabled"; }; diff --git a/arch/arm64/boot/dts/st/stm32mp257f-ev1.dts b/arch/arm64/boot/dts/st/stm32mp257f-ev1.dts index 6b68aeaf79ba..6f393b082789 100644 --- a/arch/arm64/boot/dts/st/stm32mp257f-ev1.dts +++ b/arch/arm64/boot/dts/st/stm32mp257f-ev1.dts @@ -161,6 +161,8 @@ pinctrl-0 = <&usart2_pins_a>; pinctrl-1 = <&usart2_idle_pins_a>; pinctrl-2 = <&usart2_sleep_pins_a>; + /delete-property/dmas; + /delete-property/dma-names; status = "okay"; }; |