* [PATCH 0/2] arm64: dts: renesas: r8a779g0: Add DMA and MSIOF support
@ 2022-09-26 15:26 Geert Uytterhoeven
2022-09-26 15:26 ` [PATCH 1/2] arm64: dts: renesas: r8a779g0: Add DMA support Geert Uytterhoeven
2022-09-26 15:26 ` [PATCH 2/2] arm64: dts: renesas: r8a779g0: Add MSIOF nodes Geert Uytterhoeven
0 siblings, 2 replies; 3+ messages in thread
From: Geert Uytterhoeven @ 2022-09-26 15:26 UTC (permalink / raw)
To: Magnus Damm
Cc: Wolfram Sang, linux-renesas-soc, linux-arm-kernel, Geert Uytterhoeven
Hi all,
This patch series adds support for DMA on the R-Car V4H SoC, to be used
(for now) by:
- I2C,
- the HSCIF0 serial port,
- the newly-added MSIOF SPI support.
HSCIF0 DMA was tested on the White Hawk development board by removing
the uart_console() check from sci_request_dma().
MSIOF1 and MSIOF2 were tested on the MSIOF Pin Headers on the White Hawk
development board using a logic analyzer, and internal and external
loopback with the spi-loopback-test module, cfr. the DT overlays at [1].
Unfortunately I don't know how to test I2C DMA: all transfers used by
the AT24 EEPROM driver seem to be either too small, or unsafe for DMA.
Anyone who knows a good test client?
I plan to queue these in renesas-devel-for-v6.2.
Thanks!
[1] https://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers.git/commit/?h=topic/renesas-overlays&id=88f65e516d426aaa105416557f8157a38147cb21
Geert Uytterhoeven (2):
arm64: dts: renesas: r8a779g0: Add DMA support
arm64: dts: renesas: r8a779g0: Add MSIOF nodes
arch/arm64/boot/dts/renesas/r8a779g0.dtsi | 187 ++++++++++++++++++++++
1 file changed, 187 insertions(+)
--
2.25.1
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
^ permalink raw reply [flat|nested] 3+ messages in thread
* [PATCH 1/2] arm64: dts: renesas: r8a779g0: Add DMA support
2022-09-26 15:26 [PATCH 0/2] arm64: dts: renesas: r8a779g0: Add DMA and MSIOF support Geert Uytterhoeven
@ 2022-09-26 15:26 ` Geert Uytterhoeven
2022-09-26 15:26 ` [PATCH 2/2] arm64: dts: renesas: r8a779g0: Add MSIOF nodes Geert Uytterhoeven
1 sibling, 0 replies; 3+ messages in thread
From: Geert Uytterhoeven @ 2022-09-26 15:26 UTC (permalink / raw)
To: Magnus Damm
Cc: Wolfram Sang, linux-renesas-soc, linux-arm-kernel, Geert Uytterhoeven
Add device nodes for the Direct Memory Access Controllers for System
(SYS-DMAC) on the Renesas R-Car V4H (R8A779G0) SoC.
Link all DMA consumers to the corresponding DMA controller channels.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
arch/arm64/boot/dts/renesas/r8a779g0.dtsi | 91 +++++++++++++++++++++++
1 file changed, 91 insertions(+)
diff --git a/arch/arm64/boot/dts/renesas/r8a779g0.dtsi b/arch/arm64/boot/dts/renesas/r8a779g0.dtsi
index d70f0600ae5a9469..632b9f49de296ce0 100644
--- a/arch/arm64/boot/dts/renesas/r8a779g0.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a779g0.dtsi
@@ -241,6 +241,9 @@ i2c0: i2c@e6500000 {
reg = <0 0xe6500000 0 0x40>;
interrupts = <GIC_SPI 610 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&cpg CPG_MOD 518>;
+ dmas = <&dmac0 0x91>, <&dmac0 0x90>,
+ <&dmac1 0x91>, <&dmac1 0x90>;
+ dma-names = "tx", "rx", "tx", "rx";
power-domains = <&sysc R8A779G0_PD_ALWAYS_ON>;
resets = <&cpg 518>;
i2c-scl-internal-delay-ns = <110>;
@@ -255,6 +258,9 @@ i2c1: i2c@e6508000 {
reg = <0 0xe6508000 0 0x40>;
interrupts = <GIC_SPI 611 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&cpg CPG_MOD 519>;
+ dmas = <&dmac0 0x93>, <&dmac0 0x92>,
+ <&dmac1 0x93>, <&dmac1 0x92>;
+ dma-names = "tx", "rx", "tx", "rx";
power-domains = <&sysc R8A779G0_PD_ALWAYS_ON>;
resets = <&cpg 519>;
i2c-scl-internal-delay-ns = <110>;
@@ -269,6 +275,9 @@ i2c2: i2c@e6510000 {
reg = <0 0xe6510000 0 0x40>;
interrupts = <GIC_SPI 612 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&cpg CPG_MOD 520>;
+ dmas = <&dmac0 0x95>, <&dmac0 0x94>,
+ <&dmac1 0x95>, <&dmac1 0x94>;
+ dma-names = "tx", "rx", "tx", "rx";
power-domains = <&sysc R8A779G0_PD_ALWAYS_ON>;
resets = <&cpg 520>;
i2c-scl-internal-delay-ns = <110>;
@@ -283,6 +292,9 @@ i2c3: i2c@e66d0000 {
reg = <0 0xe66d0000 0 0x40>;
interrupts = <GIC_SPI 613 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&cpg CPG_MOD 521>;
+ dmas = <&dmac0 0x97>, <&dmac0 0x96>,
+ <&dmac1 0x97>, <&dmac1 0x96>;
+ dma-names = "tx", "rx", "tx", "rx";
power-domains = <&sysc R8A779G0_PD_ALWAYS_ON>;
resets = <&cpg 521>;
i2c-scl-internal-delay-ns = <110>;
@@ -297,6 +309,9 @@ i2c4: i2c@e66d8000 {
reg = <0 0xe66d8000 0 0x40>;
interrupts = <GIC_SPI 614 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&cpg CPG_MOD 522>;
+ dma-names = "tx", "rx", "tx", "rx";
+ dmas = <&dmac0 0x99>, <&dmac0 0x98>,
+ <&dmac1 0x99>, <&dmac1 0x98>;
power-domains = <&sysc R8A779G0_PD_ALWAYS_ON>;
resets = <&cpg 522>;
i2c-scl-internal-delay-ns = <110>;
@@ -311,6 +326,9 @@ i2c5: i2c@e66e0000 {
reg = <0 0xe66e0000 0 0x40>;
interrupts = <GIC_SPI 615 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&cpg CPG_MOD 523>;
+ dmas = <&dmac0 0x9b>, <&dmac0 0x9a>,
+ <&dmac1 0x9b>, <&dmac1 0x9a>;
+ dma-names = "tx", "rx", "tx", "rx";
power-domains = <&sysc R8A779G0_PD_ALWAYS_ON>;
resets = <&cpg 523>;
i2c-scl-internal-delay-ns = <110>;
@@ -329,6 +347,9 @@ hscif0: serial@e6540000 {
<&cpg CPG_CORE R8A779G0_CLK_S0D3_PER>,
<&scif_clk>;
clock-names = "fck", "brg_int", "scif_clk";
+ dmas = <&dmac0 0x31>, <&dmac0 0x30>,
+ <&dmac1 0x31>, <&dmac1 0x30>;
+ dma-names = "tx", "rx", "tx", "rx";
power-domains = <&sysc R8A779G0_PD_ALWAYS_ON>;
resets = <&cpg 514>;
status = "disabled";
@@ -475,6 +496,76 @@ avb2: ethernet@e6820000 {
status = "disabled";
};
+ dmac0: dma-controller@e7350000 {
+ compatible = "renesas,dmac-r8a779g0",
+ "renesas,rcar-gen4-dmac";
+ reg = <0 0xe7350000 0 0x1000>,
+ <0 0xe7300000 0 0x10000>;
+ interrupts = <GIC_SPI 80 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 82 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 83 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 84 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 85 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 86 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 87 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 88 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 89 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 90 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 91 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 92 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 93 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 94 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 95 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 96 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 97 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-names = "error",
+ "ch0", "ch1", "ch2", "ch3", "ch4",
+ "ch5", "ch6", "ch7", "ch8", "ch9",
+ "ch10", "ch11", "ch12", "ch13",
+ "ch14", "ch15";
+ clocks = <&cpg CPG_MOD 709>;
+ clock-names = "fck";
+ power-domains = <&sysc R8A779G0_PD_ALWAYS_ON>;
+ resets = <&cpg 709>;
+ #dma-cells = <1>;
+ dma-channels = <16>;
+ };
+
+ dmac1: dma-controller@e7351000 {
+ compatible = "renesas,dmac-r8a779g0",
+ "renesas,rcar-gen4-dmac";
+ reg = <0 0xe7351000 0 0x1000>,
+ <0 0xe7310000 0 0x10000>;
+ interrupts = <GIC_SPI 98 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 100 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 101 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 102 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 103 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 104 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 105 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 106 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 107 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 108 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 109 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 110 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 111 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 112 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 113 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 114 IRQ_TYPE_LEVEL_HIGH>,
+ <GIC_SPI 115 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-names = "error",
+ "ch0", "ch1", "ch2", "ch3", "ch4",
+ "ch5", "ch6", "ch7", "ch8", "ch9",
+ "ch10", "ch11", "ch12", "ch13",
+ "ch14", "ch15";
+ clocks = <&cpg CPG_MOD 710>;
+ clock-names = "fck";
+ power-domains = <&sysc R8A779G0_PD_ALWAYS_ON>;
+ resets = <&cpg 710>;
+ #dma-cells = <1>;
+ dma-channels = <16>;
+ };
+
gic: interrupt-controller@f1000000 {
compatible = "arm,gic-v3";
#interrupt-cells = <3>;
--
2.25.1
^ permalink raw reply related [flat|nested] 3+ messages in thread
* [PATCH 2/2] arm64: dts: renesas: r8a779g0: Add MSIOF nodes
2022-09-26 15:26 [PATCH 0/2] arm64: dts: renesas: r8a779g0: Add DMA and MSIOF support Geert Uytterhoeven
2022-09-26 15:26 ` [PATCH 1/2] arm64: dts: renesas: r8a779g0: Add DMA support Geert Uytterhoeven
@ 2022-09-26 15:26 ` Geert Uytterhoeven
1 sibling, 0 replies; 3+ messages in thread
From: Geert Uytterhoeven @ 2022-09-26 15:26 UTC (permalink / raw)
To: Magnus Damm
Cc: Wolfram Sang, linux-renesas-soc, linux-arm-kernel, Geert Uytterhoeven
Add device nodes for the Clock-Synchronized Serial Interfaces with FIFO
(MSIOF) on the Renesas R-Car V4H (R8A779G0) SoC, including DMA support.
Based on patches in the BSP by Thanh Quan.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
Changes compared to the BSP:
- Update compatible values,
- Drop bogus clocks and assigned clocks properties.
---
arch/arm64/boot/dts/renesas/r8a779g0.dtsi | 96 +++++++++++++++++++++++
1 file changed, 96 insertions(+)
diff --git a/arch/arm64/boot/dts/renesas/r8a779g0.dtsi b/arch/arm64/boot/dts/renesas/r8a779g0.dtsi
index 632b9f49de296ce0..d31b1fb42fc67cf8 100644
--- a/arch/arm64/boot/dts/renesas/r8a779g0.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a779g0.dtsi
@@ -496,6 +496,102 @@ avb2: ethernet@e6820000 {
status = "disabled";
};
+ msiof0: spi@e6e90000 {
+ compatible = "renesas,msiof-r8a779g0",
+ "renesas,rcar-gen4-msiof";
+ reg = <0 0xe6e90000 0 0x0064>;
+ interrupts = <GIC_SPI 239 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&cpg CPG_MOD 618>;
+ dmas = <&dmac0 0x41>, <&dmac0 0x40>,
+ <&dmac1 0x41>, <&dmac1 0x40>;
+ dma-names = "tx", "rx", "tx", "rx";
+ power-domains = <&sysc R8A779G0_PD_ALWAYS_ON>;
+ resets = <&cpg 618>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "disabled";
+ };
+
+ msiof1: spi@e6ea0000 {
+ compatible = "renesas,msiof-r8a779g0",
+ "renesas,rcar-gen4-msiof";
+ reg = <0 0xe6ea0000 0 0x0064>;
+ interrupts = <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&cpg CPG_MOD 619>;
+ dmas = <&dmac0 0x43>, <&dmac0 0x42>,
+ <&dmac1 0x43>, <&dmac1 0x42>;
+ dma-names = "tx", "rx", "tx", "rx";
+ power-domains = <&sysc R8A779G0_PD_ALWAYS_ON>;
+ resets = <&cpg 619>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "disabled";
+ };
+
+ msiof2: spi@e6c00000 {
+ compatible = "renesas,msiof-r8a779g0",
+ "renesas,rcar-gen4-msiof";
+ reg = <0 0xe6c00000 0 0x0064>;
+ interrupts = <GIC_SPI 241 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&cpg CPG_MOD 620>;
+ dmas = <&dmac0 0x45>, <&dmac0 0x44>,
+ <&dmac1 0x45>, <&dmac1 0x44>;
+ dma-names = "tx", "rx", "tx", "rx";
+ power-domains = <&sysc R8A779G0_PD_ALWAYS_ON>;
+ resets = <&cpg 620>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "disabled";
+ };
+
+ msiof3: spi@e6c10000 {
+ compatible = "renesas,msiof-r8a779g0",
+ "renesas,rcar-gen4-msiof";
+ reg = <0 0xe6c10000 0 0x0064>;
+ interrupts = <GIC_SPI 242 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&cpg CPG_MOD 621>;
+ dmas = <&dmac0 0x47>, <&dmac0 0x46>,
+ <&dmac1 0x47>, <&dmac1 0x46>;
+ dma-names = "tx", "rx", "tx", "rx";
+ power-domains = <&sysc R8A779G0_PD_ALWAYS_ON>;
+ resets = <&cpg 621>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "disabled";
+ };
+
+ msiof4: spi@e6c20000 {
+ compatible = "renesas,msiof-r8a779g0",
+ "renesas,rcar-gen4-msiof";
+ reg = <0 0xe6c20000 0 0x0064>;
+ interrupts = <GIC_SPI 243 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&cpg CPG_MOD 622>;
+ dmas = <&dmac0 0x49>, <&dmac0 0x48>,
+ <&dmac1 0x49>, <&dmac1 0x48>;
+ dma-names = "tx", "rx", "tx", "rx";
+ power-domains = <&sysc R8A779G0_PD_ALWAYS_ON>;
+ resets = <&cpg 622>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "disabled";
+ };
+
+ msiof5: spi@e6c28000 {
+ compatible = "renesas,msiof-r8a779g0",
+ "renesas,rcar-gen4-msiof";
+ reg = <0 0xe6c28000 0 0x0064>;
+ interrupts = <GIC_SPI 244 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&cpg CPG_MOD 623>;
+ dmas = <&dmac0 0x4b>, <&dmac0 0x4a>,
+ <&dmac1 0x4b>, <&dmac1 0x4a>;
+ dma-names = "tx", "rx", "tx", "rx";
+ power-domains = <&sysc R8A779G0_PD_ALWAYS_ON>;
+ resets = <&cpg 623>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "disabled";
+ };
+
dmac0: dma-controller@e7350000 {
compatible = "renesas,dmac-r8a779g0",
"renesas,rcar-gen4-dmac";
--
2.25.1
^ permalink raw reply related [flat|nested] 3+ messages in thread
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2022-09-26 15:26 [PATCH 0/2] arm64: dts: renesas: r8a779g0: Add DMA and MSIOF support Geert Uytterhoeven
2022-09-26 15:26 ` [PATCH 1/2] arm64: dts: renesas: r8a779g0: Add DMA support Geert Uytterhoeven
2022-09-26 15:26 ` [PATCH 2/2] arm64: dts: renesas: r8a779g0: Add MSIOF nodes Geert Uytterhoeven
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