Re: [PATCH 1/4] riscv: dts: spacemit: add K3 PDMA request numbers

Hi Zhengyu,

On 07:45 Fri 17 Jul     , Zhengyu He wrote:
> From: liyeshan <[email protected]>
> 
> Add a local DTS header that gives symbolic names to the SpacemiT K3
> PDMA request lines of the non-secure peripherals. Device trees can use
> these K3_PDMA_* macros instead of hard-coded request numbers when wiring
> a peripheral "dmas" property.
> 
> Signed-off-by: liyeshan <[email protected]>
> Signed-off-by: Guodong Xu <[email protected]>
> Signed-off-by: Zhengyu He <[email protected]>

Reviewed-by: Yixun Lan <[email protected]>

> ---
>  arch/riscv/boot/dts/spacemit/k3-pdma.h | 83 ++++++++++++++++++++++++++++++++++
>  1 file changed, 83 insertions(+)
> 
> diff --git a/arch/riscv/boot/dts/spacemit/k3-pdma.h b/arch/riscv/boot/dts/spacemit/k3-pdma.h
> new file mode 100644
> index 000000000000..a5b723ad616a
> --- /dev/null
> +++ b/arch/riscv/boot/dts/spacemit/k3-pdma.h
> @@ -0,0 +1,83 @@
> +/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */
> +/*
> + * DMA request number (DRQ) definitions for non-secure peripherals of
> + * the SpacemiT K3 PDMA.
> + *
> + * Copyright (c) 2025 SpacemiT
> + * Copyright (c) 2026 Guodong Xu <[email protected]>
> + */
> +
> +#ifndef _DTS_SPACEMIT_K3_PDMA_H
> +#define _DTS_SPACEMIT_K3_PDMA_H
> +
> +/* UART DMA request numbers */
> +#define K3_PDMA_UART0_TX	3
> +#define K3_PDMA_UART0_RX	4
> +#define K3_PDMA_UART2_TX	5
> +#define K3_PDMA_UART2_RX	6
> +#define K3_PDMA_UART3_TX	7
> +#define K3_PDMA_UART3_RX	8
> +#define K3_PDMA_UART4_TX	9
> +#define K3_PDMA_UART4_RX	10
> +#define K3_PDMA_UART5_TX	25
> +#define K3_PDMA_UART5_RX	26
> +#define K3_PDMA_UART6_TX	27
> +#define K3_PDMA_UART6_RX	28
> +#define K3_PDMA_UART7_TX	29
> +#define K3_PDMA_UART7_RX	30
> +#define K3_PDMA_UART8_TX	31
> +#define K3_PDMA_UART8_RX	32
> +#define K3_PDMA_UART9_TX	33
> +#define K3_PDMA_UART9_RX	34
> +#define K3_PDMA_UART10_TX	53
> +#define K3_PDMA_UART10_RX	54
> +
> +/* I2C DMA request numbers */
> +#define K3_PDMA_I2C0_TX	11
> +#define K3_PDMA_I2C0_RX	12
> +#define K3_PDMA_I2C1_TX	13
> +#define K3_PDMA_I2C1_RX	14
> +#define K3_PDMA_I2C2_TX	15
> +#define K3_PDMA_I2C2_RX	16
> +#define K3_PDMA_I2C4_TX	17
> +#define K3_PDMA_I2C4_RX	18
> +#define K3_PDMA_I2C5_TX	35
> +#define K3_PDMA_I2C5_RX	36
> +#define K3_PDMA_I2C6_TX	37
> +#define K3_PDMA_I2C6_RX	38
> +#define K3_PDMA_I2C8_TX	41
> +#define K3_PDMA_I2C8_RX	42
> +
> +/* SSP/SPI DMA request numbers */
> +#define K3_PDMA_SSP3_TX	19
> +#define K3_PDMA_SSP3_RX	20
> +#define K3_PDMA_SSPA0_TX	21
> +#define K3_PDMA_SSPA0_RX	22
> +#define K3_PDMA_SSPA1_TX	23
> +#define K3_PDMA_SSPA1_RX	24
> +#define K3_PDMA_SSPA2_TX	56
> +#define K3_PDMA_SSPA2_RX	57
> +#define K3_PDMA_SSPA3_TX	58
> +#define K3_PDMA_SSPA3_RX	59
> +#define K3_PDMA_SSPA4_TX	60
> +#define K3_PDMA_SSPA4_RX	61
> +#define K3_PDMA_SSPA5_TX	62
> +#define K3_PDMA_SSPA5_RX	63
> +
> +/* CAN DMA request numbers */
> +#define K3_PDMA_CAN0_RX	43
> +#define K3_PDMA_CAN1_RX	44
> +#define K3_PDMA_CAN2_RX	51
> +#define K3_PDMA_CAN3_RX	52
> +
> +/* SSP0/1 DMA request numbers */
> +#define K3_PDMA_SSP0_TX	64
> +#define K3_PDMA_SSP0_RX	65
> +#define K3_PDMA_SSP1_TX	66
> +#define K3_PDMA_SSP1_RX	67
> +
> +/* QSPI DMA request numbers */
> +#define K3_PDMA_QSPI_RX	84
> +#define K3_PDMA_QSPI_TX	85
> +
> +#endif /* _DTS_SPACEMIT_K3_PDMA_H */
> 
> -- 
> 2.53.0
> 

-- 
Yixun Lan (dlan)

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