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

[Zhengyu He]

From: liyeshan <yeshan.li@xxxxxxxxxxxx>

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 <yeshan.li@xxxxxxxxxxxx>
Signed-off-by: Guodong Xu <docular.xu@xxxxxxxxx>
Signed-off-by: Zhengyu He <hezhy472013@xxxxxxxxx>
---
 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 <docular.xu@xxxxxxxxx>
+ */
+
+#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