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fixup! dts: bcm2712-rpi: Give PIO the "heavy" DMA channels

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Use the simplified channel property declaration scheme, where the DMA
driver finds the best match based on positive matches with no hard
exclusions.

N.B. The new scheme should give the same results with old and new DTB,
with the old property name still be accepted for backwards-compatibility.

Signed-off-by: Phil Elwell <phil@raspberrypi.com>
This commit is contained in:
Phil Elwell
2025-10-13 21:50:49 +01:00
parent 2efed8d71d
commit b6d98840ca
1 changed files with 10 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files

23
arch/arm64/boot/dts/broadcom/bcm2712-rpi.dtsi
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@@ -2,8 +2,7 @@
#include <dt-bindings/power/raspberrypi-power.h>
#define DMA_SEL_WANTHEAVY (1 << 8)
#define DMA_SEL_ONLYHEAVY (1 << 9)
#define DMA_FLAG_HEAVY (1 << 8)
&soc {
firmware: firmware {
@@ -95,20 +94,18 @@
};
&rp1_dma {
snps,sel-require = <DMA_SEL_WANTHEAVY DMA_SEL_WANTHEAVY 0 0 0 0 0 0>;
snps,sel-preclude = <0 0 DMA_SEL_ONLYHEAVY DMA_SEL_ONLYHEAVY DMA_SEL_ONLYHEAVY
DMA_SEL_ONLYHEAVY DMA_SEL_ONLYHEAVY DMA_SEL_ONLYHEAVY>;
snps,chan-flags = <DMA_FLAG_HEAVY DMA_FLAG_HEAVY 0 0 0 0 0 0>;
};
pio: &rp1_pio {
dmas = <&rp1_dma (RP1_DMA_PIO_CH0_TX | DMA_SEL_WANTHEAVY)>,
<&rp1_dma (RP1_DMA_PIO_CH0_RX | DMA_SEL_WANTHEAVY)>,
<&rp1_dma (RP1_DMA_PIO_CH1_TX | DMA_SEL_WANTHEAVY)>,
<&rp1_dma (RP1_DMA_PIO_CH1_RX | DMA_SEL_WANTHEAVY)>,
<&rp1_dma (RP1_DMA_PIO_CH2_TX | DMA_SEL_WANTHEAVY)>,
<&rp1_dma (RP1_DMA_PIO_CH2_RX | DMA_SEL_WANTHEAVY)>,
<&rp1_dma (RP1_DMA_PIO_CH3_TX | DMA_SEL_WANTHEAVY)>,
<&rp1_dma (RP1_DMA_PIO_CH3_RX | DMA_SEL_WANTHEAVY)>;
dmas = <&rp1_dma (RP1_DMA_PIO_CH0_TX | DMA_FLAG_HEAVY)>,
<&rp1_dma (RP1_DMA_PIO_CH0_RX | DMA_FLAG_HEAVY)>,
<&rp1_dma (RP1_DMA_PIO_CH1_TX | DMA_FLAG_HEAVY)>,
<&rp1_dma (RP1_DMA_PIO_CH1_RX | DMA_FLAG_HEAVY)>,
<&rp1_dma (RP1_DMA_PIO_CH2_TX | DMA_FLAG_HEAVY)>,
<&rp1_dma (RP1_DMA_PIO_CH2_RX | DMA_FLAG_HEAVY)>,
<&rp1_dma (RP1_DMA_PIO_CH3_TX | DMA_FLAG_HEAVY)>,
<&rp1_dma (RP1_DMA_PIO_CH3_RX | DMA_FLAG_HEAVY)>;
status = "okay";
};