* Re: [PATCH v2 4/7] riscv: dts: sophgo: Separate common devices from cv1800b soc
2023-10-09 11:26 ` [PATCH v2 4/7] riscv: dts: sophgo: Separate common devices from cv1800b soc Inochi Amaoto
@ 2023-10-12 10:46 ` Chen Wang
2023-10-12 12:50 ` Chen Wang
2023-10-13 9:08 ` Conor Dooley
2 siblings, 0 replies; 30+ messages in thread
From: Chen Wang @ 2023-10-12 10:46 UTC (permalink / raw)
To: Inochi Amaoto, Chao Wei, Conor Dooley, Rob Herring,
Krzysztof Kozlowski, Paul Walmsley, Palmer Dabbelt, Albert Ou,
Jisheng Zhang
Cc: linux-kernel, devicetree, linux-riscv
On 2023/10/9 19:26, Inochi Amaoto wrote:
> Move the cpu and the common peripherals of CV181x and CV180x to new file.
>
> Signed-off-by: Inochi Amaoto <inochiama@outlook.com>
> ---
> arch/riscv/boot/dts/sophgo/cv1800b.dtsi | 95 +------------------
> .../dts/sophgo/{cv1800b.dtsi => cv180x.dtsi} | 19 +---
> 2 files changed, 2 insertions(+), 112 deletions(-)
> copy arch/riscv/boot/dts/sophgo/{cv1800b.dtsi => cv180x.dtsi} (80%)
>
> diff --git a/arch/riscv/boot/dts/sophgo/cv1800b.dtsi b/arch/riscv/boot/dts/sophgo/cv1800b.dtsi
> index df40e87ee063..0904154f9829 100644
> --- a/arch/riscv/boot/dts/sophgo/cv1800b.dtsi
> +++ b/arch/riscv/boot/dts/sophgo/cv1800b.dtsi
Hi，Jisheng
Do you have any more comment on this change related to cv1800b?
> @@ -3,106 +3,13 @@
> * Copyright (C) 2023 Jisheng Zhang <jszhang@kernel.org>
> */
>
> -#include <dt-bindings/interrupt-controller/irq.h>
> +#include "cv180x.dtsi"
>
> / {
> compatible = "sophgo,cv1800b";
> - #address-cells = <1>;
> - #size-cells = <1>;
> -
> - cpus: cpus {
> - #address-cells = <1>;
> - #size-cells = <0>;
> - timebase-frequency = <25000000>;
> -
> - cpu0: cpu@0 {
> - compatible = "thead,c906", "riscv";
> - device_type = "cpu";
> - reg = <0>;
> - d-cache-block-size = <64>;
> - d-cache-sets = <512>;
> - d-cache-size = <65536>;
> - i-cache-block-size = <64>;
> - i-cache-sets = <128>;
> - i-cache-size = <32768>;
> - mmu-type = "riscv,sv39";
> - riscv,isa = "rv64imafdc";
> - riscv,isa-base = "rv64i";
> - riscv,isa-extensions = "i", "m", "a", "f", "d", "c", "zicntr", "zicsr",
> - "zifencei", "zihpm";
> -
> - cpu0_intc: interrupt-controller {
> - compatible = "riscv,cpu-intc";
> - interrupt-controller;
> - #address-cells = <0>;
> - #interrupt-cells = <1>;
> - };
> - };
> - };
> -
> - osc: oscillator {
> - compatible = "fixed-clock";
> - clock-output-names = "osc_25m";
> - #clock-cells = <0>;
> - };
>
> soc {
> - compatible = "simple-bus";
> interrupt-parent = <&plic>;
> - #address-cells = <1>;
> - #size-cells = <1>;
> - dma-noncoherent;
> - ranges;
> -
> - uart0: serial@4140000 {
> - compatible = "snps,dw-apb-uart";
> - reg = <0x04140000 0x100>;
> - interrupts = <44 IRQ_TYPE_LEVEL_HIGH>;
> - clocks = <&osc>;
> - reg-shift = <2>;
> - reg-io-width = <4>;
> - status = "disabled";
> - };
> -
> - uart1: serial@4150000 {
> - compatible = "snps,dw-apb-uart";
> - reg = <0x04150000 0x100>;
> - interrupts = <45 IRQ_TYPE_LEVEL_HIGH>;
> - clocks = <&osc>;
> - reg-shift = <2>;
> - reg-io-width = <4>;
> - status = "disabled";
> - };
> -
> - uart2: serial@4160000 {
> - compatible = "snps,dw-apb-uart";
> - reg = <0x04160000 0x100>;
> - interrupts = <46 IRQ_TYPE_LEVEL_HIGH>;
> - clocks = <&osc>;
> - reg-shift = <2>;
> - reg-io-width = <4>;
> - status = "disabled";
> - };
> -
> - uart3: serial@4170000 {
> - compatible = "snps,dw-apb-uart";
> - reg = <0x04170000 0x100>;
> - interrupts = <47 IRQ_TYPE_LEVEL_HIGH>;
> - clocks = <&osc>;
> - reg-shift = <2>;
> - reg-io-width = <4>;
> - status = "disabled";
> - };
> -
> - uart4: serial@41c0000 {
> - compatible = "snps,dw-apb-uart";
> - reg = <0x041c0000 0x100>;
> - interrupts = <48 IRQ_TYPE_LEVEL_HIGH>;
> - clocks = <&osc>;
> - reg-shift = <2>;
> - reg-io-width = <4>;
> - status = "disabled";
> - };
>
> plic: interrupt-controller@70000000 {
> compatible = "sophgo,cv1800b-plic", "thead,c900-plic";
> diff --git a/arch/riscv/boot/dts/sophgo/cv1800b.dtsi b/arch/riscv/boot/dts/sophgo/cv180x.dtsi
> similarity index 80%
> copy from arch/riscv/boot/dts/sophgo/cv1800b.dtsi
> copy to arch/riscv/boot/dts/sophgo/cv180x.dtsi
> index df40e87ee063..ffaf51724c98 100644
> --- a/arch/riscv/boot/dts/sophgo/cv1800b.dtsi
> +++ b/arch/riscv/boot/dts/sophgo/cv180x.dtsi
> @@ -1,12 +1,12 @@
> // SPDX-License-Identifier: (GPL-2.0 OR MIT)
> /*
> * Copyright (C) 2023 Jisheng Zhang <jszhang@kernel.org>
> + * Copyright (C) 2023 Inochi Amaoto <inochiama@outlook.com>
> */
>
> #include <dt-bindings/interrupt-controller/irq.h>
>
> / {
> - compatible = "sophgo,cv1800b";
> #address-cells = <1>;
> #size-cells = <1>;
>
> @@ -48,7 +48,6 @@ osc: oscillator {
>
> soc {
> compatible = "simple-bus";
> - interrupt-parent = <&plic>;
> #address-cells = <1>;
> #size-cells = <1>;
> dma-noncoherent;
> @@ -103,21 +102,5 @@ uart4: serial@41c0000 {
> reg-io-width = <4>;
> status = "disabled";
> };
> -
> - plic: interrupt-controller@70000000 {
> - compatible = "sophgo,cv1800b-plic", "thead,c900-plic";
> - reg = <0x70000000 0x4000000>;
> - interrupts-extended = <&cpu0_intc 11>, <&cpu0_intc 9>;
> - interrupt-controller;
> - #address-cells = <0>;
> - #interrupt-cells = <2>;
> - riscv,ndev = <101>;
> - };
> -
> - clint: timer@74000000 {
> - compatible = "sophgo,cv1800b-clint", "thead,c900-clint";
> - reg = <0x74000000 0x10000>;
> - interrupts-extended = <&cpu0_intc 3>, <&cpu0_intc 7>;
> - };
> };
> };
> --
> 2.42.0
>
^ permalink raw reply [flat|nested] 30+ messages in thread* Re: [PATCH v2 4/7] riscv: dts: sophgo: Separate common devices from cv1800b soc
2023-10-09 11:26 ` [PATCH v2 4/7] riscv: dts: sophgo: Separate common devices from cv1800b soc Inochi Amaoto
2023-10-12 10:46 ` Chen Wang
@ 2023-10-12 12:50 ` Chen Wang
2023-10-13 9:08 ` Conor Dooley
2 siblings, 0 replies; 30+ messages in thread
From: Chen Wang @ 2023-10-12 12:50 UTC (permalink / raw)
To: Inochi Amaoto, Chao Wei, Conor Dooley, Rob Herring,
Krzysztof Kozlowski, Paul Walmsley, Palmer Dabbelt, Albert Ou
Cc: Jisheng Zhang, linux-kernel, devicetree, linux-riscv
On 2023/10/9 19:26, Inochi Amaoto wrote:
> Move the cpu and the common peripherals of CV181x and CV180x to new file.
>
> Signed-off-by: Inochi Amaoto <inochiama@outlook.com>
> ---
> arch/riscv/boot/dts/sophgo/cv1800b.dtsi | 95 +------------------
> .../dts/sophgo/{cv1800b.dtsi => cv180x.dtsi} | 19 +---
> 2 files changed, 2 insertions(+), 112 deletions(-)
> copy arch/riscv/boot/dts/sophgo/{cv1800b.dtsi => cv180x.dtsi} (80%)
LGTM
Acked-by: Chen Wang <unicorn_wang@outlook.com>
> diff --git a/arch/riscv/boot/dts/sophgo/cv1800b.dtsi b/arch/riscv/boot/dts/sophgo/cv1800b.dtsi
> index df40e87ee063..0904154f9829 100644
> --- a/arch/riscv/boot/dts/sophgo/cv1800b.dtsi
> +++ b/arch/riscv/boot/dts/sophgo/cv1800b.dtsi
> @@ -3,106 +3,13 @@
> * Copyright (C) 2023 Jisheng Zhang <jszhang@kernel.org>
> */
>
> -#include <dt-bindings/interrupt-controller/irq.h>
> +#include "cv180x.dtsi"
>
> / {
> compatible = "sophgo,cv1800b";
> - #address-cells = <1>;
> - #size-cells = <1>;
> -
> - cpus: cpus {
> - #address-cells = <1>;
> - #size-cells = <0>;
> - timebase-frequency = <25000000>;
> -
> - cpu0: cpu@0 {
> - compatible = "thead,c906", "riscv";
> - device_type = "cpu";
> - reg = <0>;
> - d-cache-block-size = <64>;
> - d-cache-sets = <512>;
> - d-cache-size = <65536>;
> - i-cache-block-size = <64>;
> - i-cache-sets = <128>;
> - i-cache-size = <32768>;
> - mmu-type = "riscv,sv39";
> - riscv,isa = "rv64imafdc";
> - riscv,isa-base = "rv64i";
> - riscv,isa-extensions = "i", "m", "a", "f", "d", "c", "zicntr", "zicsr",
> - "zifencei", "zihpm";
> -
> - cpu0_intc: interrupt-controller {
> - compatible = "riscv,cpu-intc";
> - interrupt-controller;
> - #address-cells = <0>;
> - #interrupt-cells = <1>;
> - };
> - };
> - };
> -
> - osc: oscillator {
> - compatible = "fixed-clock";
> - clock-output-names = "osc_25m";
> - #clock-cells = <0>;
> - };
>
> soc {
> - compatible = "simple-bus";
> interrupt-parent = <&plic>;
> - #address-cells = <1>;
> - #size-cells = <1>;
> - dma-noncoherent;
> - ranges;
> -
> - uart0: serial@4140000 {
> - compatible = "snps,dw-apb-uart";
> - reg = <0x04140000 0x100>;
> - interrupts = <44 IRQ_TYPE_LEVEL_HIGH>;
> - clocks = <&osc>;
> - reg-shift = <2>;
> - reg-io-width = <4>;
> - status = "disabled";
> - };
> -
> - uart1: serial@4150000 {
> - compatible = "snps,dw-apb-uart";
> - reg = <0x04150000 0x100>;
> - interrupts = <45 IRQ_TYPE_LEVEL_HIGH>;
> - clocks = <&osc>;
> - reg-shift = <2>;
> - reg-io-width = <4>;
> - status = "disabled";
> - };
> -
> - uart2: serial@4160000 {
> - compatible = "snps,dw-apb-uart";
> - reg = <0x04160000 0x100>;
> - interrupts = <46 IRQ_TYPE_LEVEL_HIGH>;
> - clocks = <&osc>;
> - reg-shift = <2>;
> - reg-io-width = <4>;
> - status = "disabled";
> - };
> -
> - uart3: serial@4170000 {
> - compatible = "snps,dw-apb-uart";
> - reg = <0x04170000 0x100>;
> - interrupts = <47 IRQ_TYPE_LEVEL_HIGH>;
> - clocks = <&osc>;
> - reg-shift = <2>;
> - reg-io-width = <4>;
> - status = "disabled";
> - };
> -
> - uart4: serial@41c0000 {
> - compatible = "snps,dw-apb-uart";
> - reg = <0x041c0000 0x100>;
> - interrupts = <48 IRQ_TYPE_LEVEL_HIGH>;
> - clocks = <&osc>;
> - reg-shift = <2>;
> - reg-io-width = <4>;
> - status = "disabled";
> - };
>
> plic: interrupt-controller@70000000 {
> compatible = "sophgo,cv1800b-plic", "thead,c900-plic";
> diff --git a/arch/riscv/boot/dts/sophgo/cv1800b.dtsi b/arch/riscv/boot/dts/sophgo/cv180x.dtsi
> similarity index 80%
> copy from arch/riscv/boot/dts/sophgo/cv1800b.dtsi
> copy to arch/riscv/boot/dts/sophgo/cv180x.dtsi
> index df40e87ee063..ffaf51724c98 100644
> --- a/arch/riscv/boot/dts/sophgo/cv1800b.dtsi
> +++ b/arch/riscv/boot/dts/sophgo/cv180x.dtsi
> @@ -1,12 +1,12 @@
> // SPDX-License-Identifier: (GPL-2.0 OR MIT)
> /*
> * Copyright (C) 2023 Jisheng Zhang <jszhang@kernel.org>
> + * Copyright (C) 2023 Inochi Amaoto <inochiama@outlook.com>
> */
>
> #include <dt-bindings/interrupt-controller/irq.h>
>
> / {
> - compatible = "sophgo,cv1800b";
> #address-cells = <1>;
> #size-cells = <1>;
>
> @@ -48,7 +48,6 @@ osc: oscillator {
>
> soc {
> compatible = "simple-bus";
> - interrupt-parent = <&plic>;
> #address-cells = <1>;
> #size-cells = <1>;
> dma-noncoherent;
> @@ -103,21 +102,5 @@ uart4: serial@41c0000 {
> reg-io-width = <4>;
> status = "disabled";
> };
> -
> - plic: interrupt-controller@70000000 {
> - compatible = "sophgo,cv1800b-plic", "thead,c900-plic";
> - reg = <0x70000000 0x4000000>;
> - interrupts-extended = <&cpu0_intc 11>, <&cpu0_intc 9>;
> - interrupt-controller;
> - #address-cells = <0>;
> - #interrupt-cells = <2>;
> - riscv,ndev = <101>;
> - };
> -
> - clint: timer@74000000 {
> - compatible = "sophgo,cv1800b-clint", "thead,c900-clint";
> - reg = <0x74000000 0x10000>;
> - interrupts-extended = <&cpu0_intc 3>, <&cpu0_intc 7>;
> - };
> };
> };
> --
> 2.42.0
>
^ permalink raw reply [flat|nested] 30+ messages in thread* Re: [PATCH v2 4/7] riscv: dts: sophgo: Separate common devices from cv1800b soc
2023-10-09 11:26 ` [PATCH v2 4/7] riscv: dts: sophgo: Separate common devices from cv1800b soc Inochi Amaoto
2023-10-12 10:46 ` Chen Wang
2023-10-12 12:50 ` Chen Wang
@ 2023-10-13 9:08 ` Conor Dooley
2023-10-13 9:50 ` [PATCH v2 6/7] riscv: dts: sophgo: add initial CV1812H SoC device tree Inochi Amaoto
` (2 more replies)
2 siblings, 3 replies; 30+ messages in thread
From: Conor Dooley @ 2023-10-13 9:08 UTC (permalink / raw)
To: Inochi Amaoto
Cc: Chao Wei, Chen Wang, Rob Herring, Krzysztof Kozlowski,
Paul Walmsley, Palmer Dabbelt, Albert Ou, Jisheng Zhang,
linux-kernel, devicetree, linux-riscv
[-- Attachment #1: Type: text/plain, Size: 9405 bytes --]
Yo,
On Mon, Oct 09, 2023 at 07:26:35PM +0800, Inochi Amaoto wrote:
> Move the cpu and the common peripherals of CV181x and CV180x to new file.
>
> Signed-off-by: Inochi Amaoto <inochiama@outlook.com>
> ---
> arch/riscv/boot/dts/sophgo/cv1800b.dtsi | 95 +------------------
> .../dts/sophgo/{cv1800b.dtsi => cv180x.dtsi} | 19 +---
> 2 files changed, 2 insertions(+), 112 deletions(-)
> copy arch/riscv/boot/dts/sophgo/{cv1800b.dtsi => cv180x.dtsi} (80%)
>
> diff --git a/arch/riscv/boot/dts/sophgo/cv1800b.dtsi b/arch/riscv/boot/dts/sophgo/cv1800b.dtsi
> index df40e87ee063..0904154f9829 100644
> --- a/arch/riscv/boot/dts/sophgo/cv1800b.dtsi
> +++ b/arch/riscv/boot/dts/sophgo/cv1800b.dtsi
> @@ -3,106 +3,13 @@
> * Copyright (C) 2023 Jisheng Zhang <jszhang@kernel.org>
> */
>
> -#include <dt-bindings/interrupt-controller/irq.h>
> +#include "cv180x.dtsi"
>
> / {
> compatible = "sophgo,cv1800b";
> - #address-cells = <1>;
> - #size-cells = <1>;
> -
> - cpus: cpus {
> - #address-cells = <1>;
> - #size-cells = <0>;
> - timebase-frequency = <25000000>;
> -
> - cpu0: cpu@0 {
> - compatible = "thead,c906", "riscv";
> - device_type = "cpu";
> - reg = <0>;
> - d-cache-block-size = <64>;
> - d-cache-sets = <512>;
> - d-cache-size = <65536>;
> - i-cache-block-size = <64>;
> - i-cache-sets = <128>;
> - i-cache-size = <32768>;
> - mmu-type = "riscv,sv39";
> - riscv,isa = "rv64imafdc";
> - riscv,isa-base = "rv64i";
> - riscv,isa-extensions = "i", "m", "a", "f", "d", "c", "zicntr", "zicsr",
> - "zifencei", "zihpm";
> -
> - cpu0_intc: interrupt-controller {
> - compatible = "riscv,cpu-intc";
> - interrupt-controller;
> - #address-cells = <0>;
> - #interrupt-cells = <1>;
> - };
> - };
> - };
> -
> - osc: oscillator {
> - compatible = "fixed-clock";
> - clock-output-names = "osc_25m";
> - #clock-cells = <0>;
> - };
>
> soc {
> - compatible = "simple-bus";
> interrupt-parent = <&plic>;
> - #address-cells = <1>;
> - #size-cells = <1>;
> - dma-noncoherent;
> - ranges;
> -
> - uart0: serial@4140000 {
> - compatible = "snps,dw-apb-uart";
> - reg = <0x04140000 0x100>;
> - interrupts = <44 IRQ_TYPE_LEVEL_HIGH>;
> - clocks = <&osc>;
> - reg-shift = <2>;
> - reg-io-width = <4>;
> - status = "disabled";
> - };
> -
> - uart1: serial@4150000 {
> - compatible = "snps,dw-apb-uart";
> - reg = <0x04150000 0x100>;
> - interrupts = <45 IRQ_TYPE_LEVEL_HIGH>;
> - clocks = <&osc>;
> - reg-shift = <2>;
> - reg-io-width = <4>;
> - status = "disabled";
> - };
> -
> - uart2: serial@4160000 {
> - compatible = "snps,dw-apb-uart";
> - reg = <0x04160000 0x100>;
> - interrupts = <46 IRQ_TYPE_LEVEL_HIGH>;
> - clocks = <&osc>;
> - reg-shift = <2>;
> - reg-io-width = <4>;
> - status = "disabled";
> - };
> -
> - uart3: serial@4170000 {
> - compatible = "snps,dw-apb-uart";
> - reg = <0x04170000 0x100>;
> - interrupts = <47 IRQ_TYPE_LEVEL_HIGH>;
> - clocks = <&osc>;
> - reg-shift = <2>;
> - reg-io-width = <4>;
> - status = "disabled";
> - };
> -
> - uart4: serial@41c0000 {
> - compatible = "snps,dw-apb-uart";
> - reg = <0x041c0000 0x100>;
> - interrupts = <48 IRQ_TYPE_LEVEL_HIGH>;
> - clocks = <&osc>;
> - reg-shift = <2>;
> - reg-io-width = <4>;
> - status = "disabled";
> - };
>
> plic: interrupt-controller@70000000 {
> compatible = "sophgo,cv1800b-plic", "thead,c900-plic";
> diff --git a/arch/riscv/boot/dts/sophgo/cv1800b.dtsi b/arch/riscv/boot/dts/sophgo/cv180x.dtsi
> similarity index 80%
> copy from arch/riscv/boot/dts/sophgo/cv1800b.dtsi
> copy to arch/riscv/boot/dts/sophgo/cv180x.dtsi
> index df40e87ee063..ffaf51724c98 100644
Firstly, this form of diff really threw me, I was quite confused for a
few minutes. A copy plus a pair of diffs doesn't really make much sense,
when the operation being carried is an extraction of some nodes to a
different file.
> --- a/arch/riscv/boot/dts/sophgo/cv1800b.dtsi
> +++ b/arch/riscv/boot/dts/sophgo/cv180x.dtsi
> @@ -1,12 +1,12 @@
> // SPDX-License-Identifier: (GPL-2.0 OR MIT)
> /*
> * Copyright (C) 2023 Jisheng Zhang <jszhang@kernel.org>
> + * Copyright (C) 2023 Inochi Amaoto <inochiama@outlook.com>
Also, is moving around some bits of hw description really a
copyrightable change?
> */
>
> #include <dt-bindings/interrupt-controller/irq.h>
>
> / {
> - compatible = "sophgo,cv1800b";
> #address-cells = <1>;
> #size-cells = <1>;
>
> @@ -48,7 +48,6 @@ osc: oscillator {
>
> soc {
> compatible = "simple-bus";
> - interrupt-parent = <&plic>;
> #address-cells = <1>;
> #size-cells = <1>;
> dma-noncoherent;
> @@ -103,21 +102,5 @@ uart4: serial@41c0000 {
> reg-io-width = <4>;
> status = "disabled";
> };
> -
> - plic: interrupt-controller@70000000 {
> - compatible = "sophgo,cv1800b-plic", "thead,c900-plic";
> - reg = <0x70000000 0x4000000>;
> - interrupts-extended = <&cpu0_intc 11>, <&cpu0_intc 9>;
> - interrupt-controller;
> - #address-cells = <0>;
> - #interrupt-cells = <2>;
> - riscv,ndev = <101>;
> - };
> -
> - clint: timer@74000000 {
> - compatible = "sophgo,cv1800b-clint", "thead,c900-clint";
> - reg = <0x74000000 0x10000>;
> - interrupts-extended = <&cpu0_intc 3>, <&cpu0_intc 7>;
> - };
> };
> };
What I wanted to comment on was this though - it seems that both the
cv1800b and the cv1812h have identical plic and clint nodes, other than
their compatibles? If that is the case, why create a cv1800b and a
cv1812h specific file containing entirely new nodes, when overriding the
compatible would be sufficient? Doubly so if the other SoCs in the
cv18xx series are going to have identical layouts.
I gave it a quick test locally with the below diff applied on top of
this series - although I didn't make sure that I didn't re-order the
plic & clint nodes, I just wanted to demonstrate what I had done.
Cheers,
Conor.
-- 8< --
diff --git a/arch/riscv/boot/dts/sophgo/cv1800b-milkv-duo.dts b/arch/riscv/boot/dts/sophgo/cv1800b-milkv-duo.dts
index 3af9e34b3bc7..a9d809a49e7a 100644
--- a/arch/riscv/boot/dts/sophgo/cv1800b-milkv-duo.dts
+++ b/arch/riscv/boot/dts/sophgo/cv1800b-milkv-duo.dts
@@ -5,7 +5,7 @@
/dts-v1/;
-#include "cv1800b.dtsi"
+#include "cv180x.dtsi"
/ {
model = "Milk-V Duo";
diff --git a/arch/riscv/boot/dts/sophgo/cv1800b.dtsi b/arch/riscv/boot/dts/sophgo/cv1800b.dtsi
index 0904154f9829..e69de29bb2d1 100644
--- a/arch/riscv/boot/dts/sophgo/cv1800b.dtsi
+++ b/arch/riscv/boot/dts/sophgo/cv1800b.dtsi
@@ -1,30 +0,0 @@
-// SPDX-License-Identifier: (GPL-2.0 OR MIT)
-/*
- * Copyright (C) 2023 Jisheng Zhang <jszhang@kernel.org>
- */
-
-#include "cv180x.dtsi"
-
-/ {
- compatible = "sophgo,cv1800b";
-
- soc {
- interrupt-parent = <&plic>;
-
- plic: interrupt-controller@70000000 {
- compatible = "sophgo,cv1800b-plic", "thead,c900-plic";
- reg = <0x70000000 0x4000000>;
- interrupts-extended = <&cpu0_intc 11>, <&cpu0_intc 9>;
- interrupt-controller;
- #address-cells = <0>;
- #interrupt-cells = <2>;
- riscv,ndev = <101>;
- };
-
- clint: timer@74000000 {
- compatible = "sophgo,cv1800b-clint", "thead,c900-clint";
- reg = <0x74000000 0x10000>;
- interrupts-extended = <&cpu0_intc 3>, <&cpu0_intc 7>;
- };
- };
-};
diff --git a/arch/riscv/boot/dts/sophgo/cv180x.dtsi b/arch/riscv/boot/dts/sophgo/cv180x.dtsi
index 64ffb23d3626..1a2c44ba4de9 100644
--- a/arch/riscv/boot/dts/sophgo/cv180x.dtsi
+++ b/arch/riscv/boot/dts/sophgo/cv180x.dtsi
@@ -48,6 +48,7 @@ osc: oscillator {
soc {
compatible = "simple-bus";
+ interrupt-parent = <&plic>;
#address-cells = <1>;
#size-cells = <1>;
dma-noncoherent;
@@ -174,5 +175,21 @@ uart4: serial@41c0000 {
reg-io-width = <4>;
status = "disabled";
};
+
+ plic: interrupt-controller@70000000 {
+ compatible = "sophgo,cv1800b-plic", "thead,c900-plic";
+ reg = <0x70000000 0x4000000>;
+ interrupts-extended = <&cpu0_intc 11>, <&cpu0_intc 9>;
+ interrupt-controller;
+ #address-cells = <0>;
+ #interrupt-cells = <2>;
+ riscv,ndev = <101>;
+ };
+
+ clint: timer@74000000 {
+ compatible = "sophgo,cv1800b-clint", "thead,c900-clint";
+ reg = <0x74000000 0x10000>;
+ interrupts-extended = <&cpu0_intc 3>, <&cpu0_intc 7>;
+ };
};
};
diff --git a/arch/riscv/boot/dts/sophgo/cv1812h.dtsi b/arch/riscv/boot/dts/sophgo/cv1812h.dtsi
index 3864d34b0100..c0a8d3290cc8 100644
--- a/arch/riscv/boot/dts/sophgo/cv1812h.dtsi
+++ b/arch/riscv/boot/dts/sophgo/cv1812h.dtsi
@@ -15,22 +15,13 @@ memory@80000000 {
};
soc {
- interrupt-parent = <&plic>;
plic: interrupt-controller@70000000 {
compatible = "sophgo,cv1812h-plic", "thead,c900-plic";
- reg = <0x70000000 0x4000000>;
- interrupts-extended = <&cpu0_intc 11>, <&cpu0_intc 9>;
- interrupt-controller;
- #address-cells = <0>;
- #interrupt-cells = <2>;
- riscv,ndev = <101>;
};
clint: timer@74000000 {
compatible = "sophgo,cv1812h-clint", "thead,c900-clint";
- reg = <0x74000000 0x10000>;
- interrupts-extended = <&cpu0_intc 3>, <&cpu0_intc 7>;
};
};
};
[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 228 bytes --]
^ permalink raw reply related [flat|nested] 30+ messages in thread* Re: [PATCH v2 6/7] riscv: dts: sophgo: add initial CV1812H SoC device tree
2023-10-13 9:08 ` Conor Dooley
@ 2023-10-13 9:50 ` Inochi Amaoto
2023-10-13 9:52 ` [PATCH v2 6/7] riscv: dts: sophgo: Separate common devices from cv1800b soc Inochi Amaoto
2023-10-14 9:04 ` Jisheng Zhang
2 siblings, 0 replies; 30+ messages in thread
From: Inochi Amaoto @ 2023-10-13 9:50 UTC (permalink / raw)
To: Conor Dooley
Cc: Inochi Amaoto, Chao Wei, Chen Wang, Rob Herring,
Krzysztof Kozlowski, Paul Walmsley, Palmer Dabbelt, Albert Ou,
Jisheng Zhang, linux-kernel, devicetree, linux-riscv
>Yo,
>
>On Mon, Oct 09, 2023 at 07:26:35PM +0800, Inochi Amaoto wrote:
>> Move the cpu and the common peripherals of CV181x and CV180x to new file.
>>
>> Signed-off-by: Inochi Amaoto <inochiama@outlook.com>
>> ---
>> arch/riscv/boot/dts/sophgo/cv1800b.dtsi | 95 +------------------
>> .../dts/sophgo/{cv1800b.dtsi => cv180x.dtsi} | 19 +---
>> 2 files changed, 2 insertions(+), 112 deletions(-)
>> copy arch/riscv/boot/dts/sophgo/{cv1800b.dtsi => cv180x.dtsi} (80%)
>>
>> diff --git a/arch/riscv/boot/dts/sophgo/cv1800b.dtsi b/arch/riscv/boot/dts/sophgo/cv1800b.dtsi
>> index df40e87ee063..0904154f9829 100644
>> --- a/arch/riscv/boot/dts/sophgo/cv1800b.dtsi
>> +++ b/arch/riscv/boot/dts/sophgo/cv1800b.dtsi
>> @@ -3,106 +3,13 @@
>> * Copyright (C) 2023 Jisheng Zhang <jszhang@kernel.org>
>> */
>>
>> -#include <dt-bindings/interrupt-controller/irq.h>
>> +#include "cv180x.dtsi"
>>
>> / {
>> compatible = "sophgo,cv1800b";
>> - #address-cells = <1>;
>> - #size-cells = <1>;
>> -
>> - cpus: cpus {
>> - #address-cells = <1>;
>> - #size-cells = <0>;
>> - timebase-frequency = <25000000>;
>> -
>> - cpu0: cpu@0 {
>> - compatible = "thead,c906", "riscv";
>> - device_type = "cpu";
>> - reg = <0>;
>> - d-cache-block-size = <64>;
>> - d-cache-sets = <512>;
>> - d-cache-size = <65536>;
>> - i-cache-block-size = <64>;
>> - i-cache-sets = <128>;
>> - i-cache-size = <32768>;
>> - mmu-type = "riscv,sv39";
>> - riscv,isa = "rv64imafdc";
>> - riscv,isa-base = "rv64i";
>> - riscv,isa-extensions = "i", "m", "a", "f", "d", "c", "zicntr", "zicsr",
>> - "zifencei", "zihpm";
>> -
>> - cpu0_intc: interrupt-controller {
>> - compatible = "riscv,cpu-intc";
>> - interrupt-controller;
>> - #address-cells = <0>;
>> - #interrupt-cells = <1>;
>> - };
>> - };
>> - };
>> -
>> - osc: oscillator {
>> - compatible = "fixed-clock";
>> - clock-output-names = "osc_25m";
>> - #clock-cells = <0>;
>> - };
>>
>> soc {
>> - compatible = "simple-bus";
>> interrupt-parent = <&plic>;
>> - #address-cells = <1>;
>> - #size-cells = <1>;
>> - dma-noncoherent;
>> - ranges;
>> -
>> - uart0: serial@4140000 {
>> - compatible = "snps,dw-apb-uart";
>> - reg = <0x04140000 0x100>;
>> - interrupts = <44 IRQ_TYPE_LEVEL_HIGH>;
>> - clocks = <&osc>;
>> - reg-shift = <2>;
>> - reg-io-width = <4>;
>> - status = "disabled";
>> - };
>> -
>> - uart1: serial@4150000 {
>> - compatible = "snps,dw-apb-uart";
>> - reg = <0x04150000 0x100>;
>> - interrupts = <45 IRQ_TYPE_LEVEL_HIGH>;
>> - clocks = <&osc>;
>> - reg-shift = <2>;
>> - reg-io-width = <4>;
>> - status = "disabled";
>> - };
>> -
>> - uart2: serial@4160000 {
>> - compatible = "snps,dw-apb-uart";
>> - reg = <0x04160000 0x100>;
>> - interrupts = <46 IRQ_TYPE_LEVEL_HIGH>;
>> - clocks = <&osc>;
>> - reg-shift = <2>;
>> - reg-io-width = <4>;
>> - status = "disabled";
>> - };
>> -
>> - uart3: serial@4170000 {
>> - compatible = "snps,dw-apb-uart";
>> - reg = <0x04170000 0x100>;
>> - interrupts = <47 IRQ_TYPE_LEVEL_HIGH>;
>> - clocks = <&osc>;
>> - reg-shift = <2>;
>> - reg-io-width = <4>;
>> - status = "disabled";
>> - };
>> -
>> - uart4: serial@41c0000 {
>> - compatible = "snps,dw-apb-uart";
>> - reg = <0x041c0000 0x100>;
>> - interrupts = <48 IRQ_TYPE_LEVEL_HIGH>;
>> - clocks = <&osc>;
>> - reg-shift = <2>;
>> - reg-io-width = <4>;
>> - status = "disabled";
>> - };
>>
>> plic: interrupt-controller@70000000 {
>> compatible = "sophgo,cv1800b-plic", "thead,c900-plic";
>> diff --git a/arch/riscv/boot/dts/sophgo/cv1800b.dtsi b/arch/riscv/boot/dts/sophgo/cv180x.dtsi
>> similarity index 80%
>> copy from arch/riscv/boot/dts/sophgo/cv1800b.dtsi
>> copy to arch/riscv/boot/dts/sophgo/cv180x.dtsi
>> index df40e87ee063..ffaf51724c98 100644
>
>Firstly, this form of diff really threw me, I was quite confused for a
>few minutes. A copy plus a pair of diffs doesn't really make much sense,
>when the operation being carried is an extraction of some nodes to a
>different file.
>
I was told to use -C/-M/-B to generate patch, and the git format-patch
give me this wired output if I use -C, using -M seems no change from v1.
The -B output is also disappointing. Maybe I need to generate agaion?
The v1 version:
https://lore.kernel.org/linux-riscv/IA1PR20MB495360B632D106BBB833D82ABBCFA@IA1PR20MB4953.namprd20.prod.outlook.com/
>> --- a/arch/riscv/boot/dts/sophgo/cv1800b.dtsi
>> +++ b/arch/riscv/boot/dts/sophgo/cv180x.dtsi
>> @@ -1,12 +1,12 @@
>> // SPDX-License-Identifier: (GPL-2.0 OR MIT)
>> /*
>> * Copyright (C) 2023 Jisheng Zhang <jszhang@kernel.org>
>> + * Copyright (C) 2023 Inochi Amaoto <inochiama@outlook.com>
>
>Also, is moving around some bits of hw description really a
>copyrightable change?
>
It seems to be a mistake when I splitting the patch from v1.
This copyright should in the next patch.
>> */
>>
>> #include <dt-bindings/interrupt-controller/irq.h>
>>
>> / {
>> - compatible = "sophgo,cv1800b";
>> #address-cells = <1>;
>> #size-cells = <1>;
>>
>> @@ -48,7 +48,6 @@ osc: oscillator {
>>
>> soc {
>> compatible = "simple-bus";
>> - interrupt-parent = <&plic>;
>> #address-cells = <1>;
>> #size-cells = <1>;
>> dma-noncoherent;
>> @@ -103,21 +102,5 @@ uart4: serial@41c0000 {
>> reg-io-width = <4>;
>> status = "disabled";
>> };
>> -
>> - plic: interrupt-controller@70000000 {
>> - compatible = "sophgo,cv1800b-plic", "thead,c900-plic";
>> - reg = <0x70000000 0x4000000>;
>> - interrupts-extended = <&cpu0_intc 11>, <&cpu0_intc 9>;
>> - interrupt-controller;
>> - #address-cells = <0>;
>> - #interrupt-cells = <2>;
>> - riscv,ndev = <101>;
>> - };
>> -
>> - clint: timer@74000000 {
>> - compatible = "sophgo,cv1800b-clint", "thead,c900-clint";
>> - reg = <0x74000000 0x10000>;
>> - interrupts-extended = <&cpu0_intc 3>, <&cpu0_intc 7>;
>> - };
>> };
>> };
>
>What I wanted to comment on was this though - it seems that both the
>cv1800b and the cv1812h have identical plic and clint nodes, other than
>their compatibles? If that is the case, why create a cv1800b and a
>cv1812h specific file containing entirely new nodes, when overriding the
>compatible would be sufficient? Doubly so if the other SoCs in the
>cv18xx series are going to have identical layouts.
>
>I gave it a quick test locally with the below diff applied on top of
>this series - although I didn't make sure that I didn't re-order the
>plic & clint nodes, I just wanted to demonstrate what I had done.
>
Thanks for demonstration. AFAIK, what you said is true. the most devices
of CV180x and CV181x are the same, including plic and clint. The reason I
used a new one is to identify these two devices without making the
compatible string confusing.
Should I change the binding name of plic and clint to "sophgo,cv1800-xxx"
to mark there are the same series? I think this can avoid this confusing
dt nodes.
>Cheers,
>Conor.
>
^ permalink raw reply [flat|nested] 30+ messages in thread* Re: [PATCH v2 6/7] riscv: dts: sophgo: Separate common devices from cv1800b soc
2023-10-13 9:08 ` Conor Dooley
2023-10-13 9:50 ` [PATCH v2 6/7] riscv: dts: sophgo: add initial CV1812H SoC device tree Inochi Amaoto
@ 2023-10-13 9:52 ` Inochi Amaoto
2023-10-13 13:27 ` Conor Dooley
2023-10-14 9:04 ` Jisheng Zhang
2 siblings, 1 reply; 30+ messages in thread
From: Inochi Amaoto @ 2023-10-13 9:52 UTC (permalink / raw)
To: Conor Dooley
Cc: Inochi Amaoto, Chao Wei, Chen Wang, Rob Herring,
Krzysztof Kozlowski, Paul Walmsley, Palmer Dabbelt, Albert Ou,
Jisheng Zhang, linux-kernel, devicetree, linux-riscv
Sorry for the wrong title.
>Yo,
>
>On Mon, Oct 09, 2023 at 07:26:35PM +0800, Inochi Amaoto wrote:
>> Move the cpu and the common peripherals of CV181x and CV180x to new file.
>>
>> Signed-off-by: Inochi Amaoto <inochiama@outlook.com>
>> ---
>> arch/riscv/boot/dts/sophgo/cv1800b.dtsi | 95 +------------------
>> .../dts/sophgo/{cv1800b.dtsi => cv180x.dtsi} | 19 +---
>> 2 files changed, 2 insertions(+), 112 deletions(-)
>> copy arch/riscv/boot/dts/sophgo/{cv1800b.dtsi => cv180x.dtsi} (80%)
>>
>> diff --git a/arch/riscv/boot/dts/sophgo/cv1800b.dtsi b/arch/riscv/boot/dts/sophgo/cv1800b.dtsi
>> index df40e87ee063..0904154f9829 100644
>> --- a/arch/riscv/boot/dts/sophgo/cv1800b.dtsi
>> +++ b/arch/riscv/boot/dts/sophgo/cv1800b.dtsi
>> @@ -3,106 +3,13 @@
>> * Copyright (C) 2023 Jisheng Zhang <jszhang@kernel.org>
>> */
>>
>> -#include <dt-bindings/interrupt-controller/irq.h>
>> +#include "cv180x.dtsi"
>>
>> / {
>> compatible = "sophgo,cv1800b";
>> - #address-cells = <1>;
>> - #size-cells = <1>;
>> -
>> - cpus: cpus {
>> - #address-cells = <1>;
>> - #size-cells = <0>;
>> - timebase-frequency = <25000000>;
>> -
>> - cpu0: cpu@0 {
>> - compatible = "thead,c906", "riscv";
>> - device_type = "cpu";
>> - reg = <0>;
>> - d-cache-block-size = <64>;
>> - d-cache-sets = <512>;
>> - d-cache-size = <65536>;
>> - i-cache-block-size = <64>;
>> - i-cache-sets = <128>;
>> - i-cache-size = <32768>;
>> - mmu-type = "riscv,sv39";
>> - riscv,isa = "rv64imafdc";
>> - riscv,isa-base = "rv64i";
>> - riscv,isa-extensions = "i", "m", "a", "f", "d", "c", "zicntr", "zicsr",
>> - "zifencei", "zihpm";
>> -
>> - cpu0_intc: interrupt-controller {
>> - compatible = "riscv,cpu-intc";
>> - interrupt-controller;
>> - #address-cells = <0>;
>> - #interrupt-cells = <1>;
>> - };
>> - };
>> - };
>> -
>> - osc: oscillator {
>> - compatible = "fixed-clock";
>> - clock-output-names = "osc_25m";
>> - #clock-cells = <0>;
>> - };
>>
>> soc {
>> - compatible = "simple-bus";
>> interrupt-parent = <&plic>;
>> - #address-cells = <1>;
>> - #size-cells = <1>;
>> - dma-noncoherent;
>> - ranges;
>> -
>> - uart0: serial@4140000 {
>> - compatible = "snps,dw-apb-uart";
>> - reg = <0x04140000 0x100>;
>> - interrupts = <44 IRQ_TYPE_LEVEL_HIGH>;
>> - clocks = <&osc>;
>> - reg-shift = <2>;
>> - reg-io-width = <4>;
>> - status = "disabled";
>> - };
>> -
>> - uart1: serial@4150000 {
>> - compatible = "snps,dw-apb-uart";
>> - reg = <0x04150000 0x100>;
>> - interrupts = <45 IRQ_TYPE_LEVEL_HIGH>;
>> - clocks = <&osc>;
>> - reg-shift = <2>;
>> - reg-io-width = <4>;
>> - status = "disabled";
>> - };
>> -
>> - uart2: serial@4160000 {
>> - compatible = "snps,dw-apb-uart";
>> - reg = <0x04160000 0x100>;
>> - interrupts = <46 IRQ_TYPE_LEVEL_HIGH>;
>> - clocks = <&osc>;
>> - reg-shift = <2>;
>> - reg-io-width = <4>;
>> - status = "disabled";
>> - };
>> -
>> - uart3: serial@4170000 {
>> - compatible = "snps,dw-apb-uart";
>> - reg = <0x04170000 0x100>;
>> - interrupts = <47 IRQ_TYPE_LEVEL_HIGH>;
>> - clocks = <&osc>;
>> - reg-shift = <2>;
>> - reg-io-width = <4>;
>> - status = "disabled";
>> - };
>> -
>> - uart4: serial@41c0000 {
>> - compatible = "snps,dw-apb-uart";
>> - reg = <0x041c0000 0x100>;
>> - interrupts = <48 IRQ_TYPE_LEVEL_HIGH>;
>> - clocks = <&osc>;
>> - reg-shift = <2>;
>> - reg-io-width = <4>;
>> - status = "disabled";
>> - };
>>
>> plic: interrupt-controller@70000000 {
>> compatible = "sophgo,cv1800b-plic", "thead,c900-plic";
>> diff --git a/arch/riscv/boot/dts/sophgo/cv1800b.dtsi b/arch/riscv/boot/dts/sophgo/cv180x.dtsi
>> similarity index 80%
>> copy from arch/riscv/boot/dts/sophgo/cv1800b.dtsi
>> copy to arch/riscv/boot/dts/sophgo/cv180x.dtsi
>> index df40e87ee063..ffaf51724c98 100644
>
>Firstly, this form of diff really threw me, I was quite confused for a
>few minutes. A copy plus a pair of diffs doesn't really make much sense,
>when the operation being carried is an extraction of some nodes to a
>different file.
>
I was told to use -C/-M/-B to generate patch, and the git format-patch
give me this wired output if I use -C, using -M seems no change from v1.
The -B output is also disappointing. Maybe I need to generate agaion?
The v1 version:
https://lore.kernel.org/linux-riscv/IA1PR20MB495360B632D106BBB833D82ABBCFA@IA1PR20MB4953.namprd20.prod.outlook.com/
>> --- a/arch/riscv/boot/dts/sophgo/cv1800b.dtsi
>> +++ b/arch/riscv/boot/dts/sophgo/cv180x.dtsi
>> @@ -1,12 +1,12 @@
>> // SPDX-License-Identifier: (GPL-2.0 OR MIT)
>> /*
>> * Copyright (C) 2023 Jisheng Zhang <jszhang@kernel.org>
>> + * Copyright (C) 2023 Inochi Amaoto <inochiama@outlook.com>
>
>Also, is moving around some bits of hw description really a
>copyrightable change?
>
It seems to be a mistake when I splitting the patch from v1.
This copyright should in the next patch.
>> */
>>
>> #include <dt-bindings/interrupt-controller/irq.h>
>>
>> / {
>> - compatible = "sophgo,cv1800b";
>> #address-cells = <1>;
>> #size-cells = <1>;
>>
>> @@ -48,7 +48,6 @@ osc: oscillator {
>>
>> soc {
>> compatible = "simple-bus";
>> - interrupt-parent = <&plic>;
>> #address-cells = <1>;
>> #size-cells = <1>;
>> dma-noncoherent;
>> @@ -103,21 +102,5 @@ uart4: serial@41c0000 {
>> reg-io-width = <4>;
>> status = "disabled";
>> };
>> -
>> - plic: interrupt-controller@70000000 {
>> - compatible = "sophgo,cv1800b-plic", "thead,c900-plic";
>> - reg = <0x70000000 0x4000000>;
>> - interrupts-extended = <&cpu0_intc 11>, <&cpu0_intc 9>;
>> - interrupt-controller;
>> - #address-cells = <0>;
>> - #interrupt-cells = <2>;
>> - riscv,ndev = <101>;
>> - };
>> -
>> - clint: timer@74000000 {
>> - compatible = "sophgo,cv1800b-clint", "thead,c900-clint";
>> - reg = <0x74000000 0x10000>;
>> - interrupts-extended = <&cpu0_intc 3>, <&cpu0_intc 7>;
>> - };
>> };
>> };
>
>What I wanted to comment on was this though - it seems that both the
>cv1800b and the cv1812h have identical plic and clint nodes, other than
>their compatibles? If that is the case, why create a cv1800b and a
>cv1812h specific file containing entirely new nodes, when overriding the
>compatible would be sufficient? Doubly so if the other SoCs in the
>cv18xx series are going to have identical layouts.
>
>I gave it a quick test locally with the below diff applied on top of
>this series - although I didn't make sure that I didn't re-order the
>plic & clint nodes, I just wanted to demonstrate what I had done.
>
Thanks for demonstration. AFAIK, what you said is true. the most devices
of CV180x and CV181x are the same, including plic and clint. The reason I
used a new one is to identify these two devices without making the
compatible string confusing.
Should I change the binding name of plic and clint to "sophgo,cv1800-xxx"
to mark there are the same series? I think this can avoid this confusing
dt nodes.
>Cheers,
>Conor.
>
^ permalink raw reply [flat|nested] 30+ messages in thread* Re: [PATCH v2 6/7] riscv: dts: sophgo: Separate common devices from cv1800b soc
2023-10-13 9:52 ` [PATCH v2 6/7] riscv: dts: sophgo: Separate common devices from cv1800b soc Inochi Amaoto
@ 2023-10-13 13:27 ` Conor Dooley
2023-10-13 22:36 ` [PATCH v2 4/7] " Inochi Amaoto
0 siblings, 1 reply; 30+ messages in thread
From: Conor Dooley @ 2023-10-13 13:27 UTC (permalink / raw)
To: Inochi Amaoto
Cc: Conor Dooley, Chao Wei, Chen Wang, Rob Herring,
Krzysztof Kozlowski, Paul Walmsley, Palmer Dabbelt, Albert Ou,
Jisheng Zhang, linux-kernel, devicetree, linux-riscv
[-- Attachment #1: Type: text/plain, Size: 8188 bytes --]
On Fri, Oct 13, 2023 at 05:52:03PM +0800, Inochi Amaoto wrote:
> Sorry for the wrong title.
>
> >Yo,
> >
> >On Mon, Oct 09, 2023 at 07:26:35PM +0800, Inochi Amaoto wrote:
> >> Move the cpu and the common peripherals of CV181x and CV180x to new file.
> >>
> >> Signed-off-by: Inochi Amaoto <inochiama@outlook.com>
> >> ---
> >> arch/riscv/boot/dts/sophgo/cv1800b.dtsi | 95 +------------------
> >> .../dts/sophgo/{cv1800b.dtsi => cv180x.dtsi} | 19 +---
> >> 2 files changed, 2 insertions(+), 112 deletions(-)
> >> copy arch/riscv/boot/dts/sophgo/{cv1800b.dtsi => cv180x.dtsi} (80%)
> >>
> >> diff --git a/arch/riscv/boot/dts/sophgo/cv1800b.dtsi b/arch/riscv/boot/dts/sophgo/cv1800b.dtsi
> >> index df40e87ee063..0904154f9829 100644
> >> --- a/arch/riscv/boot/dts/sophgo/cv1800b.dtsi
> >> +++ b/arch/riscv/boot/dts/sophgo/cv1800b.dtsi
> >> @@ -3,106 +3,13 @@
> >> * Copyright (C) 2023 Jisheng Zhang <jszhang@kernel.org>
> >> */
> >>
> >> -#include <dt-bindings/interrupt-controller/irq.h>
> >> +#include "cv180x.dtsi"
> >>
> >> / {
> >> compatible = "sophgo,cv1800b";
> >> - #address-cells = <1>;
> >> - #size-cells = <1>;
> >> -
> >> - cpus: cpus {
> >> - #address-cells = <1>;
> >> - #size-cells = <0>;
> >> - timebase-frequency = <25000000>;
> >> -
> >> - cpu0: cpu@0 {
> >> - compatible = "thead,c906", "riscv";
> >> - device_type = "cpu";
> >> - reg = <0>;
> >> - d-cache-block-size = <64>;
> >> - d-cache-sets = <512>;
> >> - d-cache-size = <65536>;
> >> - i-cache-block-size = <64>;
> >> - i-cache-sets = <128>;
> >> - i-cache-size = <32768>;
> >> - mmu-type = "riscv,sv39";
> >> - riscv,isa = "rv64imafdc";
> >> - riscv,isa-base = "rv64i";
> >> - riscv,isa-extensions = "i", "m", "a", "f", "d", "c", "zicntr", "zicsr",
> >> - "zifencei", "zihpm";
> >> -
> >> - cpu0_intc: interrupt-controller {
> >> - compatible = "riscv,cpu-intc";
> >> - interrupt-controller;
> >> - #address-cells = <0>;
> >> - #interrupt-cells = <1>;
> >> - };
> >> - };
> >> - };
> >> -
> >> - osc: oscillator {
> >> - compatible = "fixed-clock";
> >> - clock-output-names = "osc_25m";
> >> - #clock-cells = <0>;
> >> - };
> >>
> >> soc {
> >> - compatible = "simple-bus";
> >> interrupt-parent = <&plic>;
> >> - #address-cells = <1>;
> >> - #size-cells = <1>;
> >> - dma-noncoherent;
> >> - ranges;
> >> -
> >> - uart0: serial@4140000 {
> >> - compatible = "snps,dw-apb-uart";
> >> - reg = <0x04140000 0x100>;
> >> - interrupts = <44 IRQ_TYPE_LEVEL_HIGH>;
> >> - clocks = <&osc>;
> >> - reg-shift = <2>;
> >> - reg-io-width = <4>;
> >> - status = "disabled";
> >> - };
> >> -
> >> - uart1: serial@4150000 {
> >> - compatible = "snps,dw-apb-uart";
> >> - reg = <0x04150000 0x100>;
> >> - interrupts = <45 IRQ_TYPE_LEVEL_HIGH>;
> >> - clocks = <&osc>;
> >> - reg-shift = <2>;
> >> - reg-io-width = <4>;
> >> - status = "disabled";
> >> - };
> >> -
> >> - uart2: serial@4160000 {
> >> - compatible = "snps,dw-apb-uart";
> >> - reg = <0x04160000 0x100>;
> >> - interrupts = <46 IRQ_TYPE_LEVEL_HIGH>;
> >> - clocks = <&osc>;
> >> - reg-shift = <2>;
> >> - reg-io-width = <4>;
> >> - status = "disabled";
> >> - };
> >> -
> >> - uart3: serial@4170000 {
> >> - compatible = "snps,dw-apb-uart";
> >> - reg = <0x04170000 0x100>;
> >> - interrupts = <47 IRQ_TYPE_LEVEL_HIGH>;
> >> - clocks = <&osc>;
> >> - reg-shift = <2>;
> >> - reg-io-width = <4>;
> >> - status = "disabled";
> >> - };
> >> -
> >> - uart4: serial@41c0000 {
> >> - compatible = "snps,dw-apb-uart";
> >> - reg = <0x041c0000 0x100>;
> >> - interrupts = <48 IRQ_TYPE_LEVEL_HIGH>;
> >> - clocks = <&osc>;
> >> - reg-shift = <2>;
> >> - reg-io-width = <4>;
> >> - status = "disabled";
> >> - };
> >>
> >> plic: interrupt-controller@70000000 {
> >> compatible = "sophgo,cv1800b-plic", "thead,c900-plic";
> >> diff --git a/arch/riscv/boot/dts/sophgo/cv1800b.dtsi b/arch/riscv/boot/dts/sophgo/cv180x.dtsi
> >> similarity index 80%
> >> copy from arch/riscv/boot/dts/sophgo/cv1800b.dtsi
> >> copy to arch/riscv/boot/dts/sophgo/cv180x.dtsi
> >> index df40e87ee063..ffaf51724c98 100644
> >
> >Firstly, this form of diff really threw me, I was quite confused for a
> >few minutes. A copy plus a pair of diffs doesn't really make much sense,
> >when the operation being carried is an extraction of some nodes to a
> >different file.
> >
>
> I was told to use -C/-M/-B to generate patch, and the git format-patch
> give me this wired output if I use -C, using -M seems no change from v1.
> The -B output is also disappointing. Maybe I need to generate agaion?
I don't think generating it again is going to change the outcome & I
don't really think the -C version of this patch makes much sense, it is
hard to tell what has actually been moved.
> The v1 version:
> https://lore.kernel.org/linux-riscv/IA1PR20MB495360B632D106BBB833D82ABBCFA@IA1PR20MB4953.namprd20.prod.outlook.com/
>
> >> --- a/arch/riscv/boot/dts/sophgo/cv1800b.dtsi
> >> +++ b/arch/riscv/boot/dts/sophgo/cv180x.dtsi
> >> @@ -1,12 +1,12 @@
> >> // SPDX-License-Identifier: (GPL-2.0 OR MIT)
> >> /*
> >> * Copyright (C) 2023 Jisheng Zhang <jszhang@kernel.org>
> >> + * Copyright (C) 2023 Inochi Amaoto <inochiama@outlook.com>
> >
> >Also, is moving around some bits of hw description really a
> >copyrightable change?
> >
>
> It seems to be a mistake when I splitting the patch from v1.
> This copyright should in the next patch.
>
> >> */
> >>
> >> #include <dt-bindings/interrupt-controller/irq.h>
> >>
> >> / {
> >> - compatible = "sophgo,cv1800b";
> >> #address-cells = <1>;
> >> #size-cells = <1>;
> >>
> >> @@ -48,7 +48,6 @@ osc: oscillator {
> >>
> >> soc {
> >> compatible = "simple-bus";
> >> - interrupt-parent = <&plic>;
> >> #address-cells = <1>;
> >> #size-cells = <1>;
> >> dma-noncoherent;
> >> @@ -103,21 +102,5 @@ uart4: serial@41c0000 {
> >> reg-io-width = <4>;
> >> status = "disabled";
> >> };
> >> -
> >> - plic: interrupt-controller@70000000 {
> >> - compatible = "sophgo,cv1800b-plic", "thead,c900-plic";
> >> - reg = <0x70000000 0x4000000>;
> >> - interrupts-extended = <&cpu0_intc 11>, <&cpu0_intc 9>;
> >> - interrupt-controller;
> >> - #address-cells = <0>;
> >> - #interrupt-cells = <2>;
> >> - riscv,ndev = <101>;
> >> - };
> >> -
> >> - clint: timer@74000000 {
> >> - compatible = "sophgo,cv1800b-clint", "thead,c900-clint";
> >> - reg = <0x74000000 0x10000>;
> >> - interrupts-extended = <&cpu0_intc 3>, <&cpu0_intc 7>;
> >> - };
> >> };
> >> };
> >
> >What I wanted to comment on was this though - it seems that both the
> >cv1800b and the cv1812h have identical plic and clint nodes, other than
> >their compatibles? If that is the case, why create a cv1800b and a
> >cv1812h specific file containing entirely new nodes, when overriding the
> >compatible would be sufficient? Doubly so if the other SoCs in the
> >cv18xx series are going to have identical layouts.
> >
> >I gave it a quick test locally with the below diff applied on top of
> >this series - although I didn't make sure that I didn't re-order the
> >plic & clint nodes, I just wanted to demonstrate what I had done.
> >
>
> Thanks for demonstration. AFAIK, what you said is true. the most devices
> of CV180x and CV181x are the same, including plic and clint. The reason I
> used a new one is to identify these two devices without making the
> compatible string confusing.
> Should I change the binding name of plic and clint to "sophgo,cv1800-xxx"
> to mark there are the same series? I think this can avoid this confusing
> dt nodes.
I personally don't find the compatibles (or the dt nodes) confusing, so
I dunno. Having reusing the compatible is not something that I am a fan of
either, since this seems to be a different soc (given the sram &
coprocessor etc) even if the addresses of the peripherals are identical.
[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 228 bytes --]
^ permalink raw reply [flat|nested] 30+ messages in thread* Re: [PATCH v2 4/7] riscv: dts: sophgo: Separate common devices from cv1800b soc
2023-10-13 13:27 ` Conor Dooley
@ 2023-10-13 22:36 ` Inochi Amaoto
0 siblings, 0 replies; 30+ messages in thread
From: Inochi Amaoto @ 2023-10-13 22:36 UTC (permalink / raw)
To: Conor Dooley
Cc: Inochi Amaoto, Chao Wei, Chen Wang, Rob Herring,
Krzysztof Kozlowski, Paul Walmsley, Palmer Dabbelt, Albert Ou,
Jisheng Zhang, linux-kernel, devicetree, linux-riscv
>
>On Fri, Oct 13, 2023 at 05:52:03PM +0800, Inochi Amaoto wrote:
>> Sorry for the wrong title.
>>
>>> Yo,
>>>
>>> On Mon, Oct 09, 2023 at 07:26:35PM +0800, Inochi Amaoto wrote:
>>>> Move the cpu and the common peripherals of CV181x and CV180x to new file.
>>>>
>>>> Signed-off-by: Inochi Amaoto <inochiama@outlook.com>
>>>> ---
>>>> arch/riscv/boot/dts/sophgo/cv1800b.dtsi | 95 +------------------
>>>> .../dts/sophgo/{cv1800b.dtsi => cv180x.dtsi} | 19 +---
>>>> 2 files changed, 2 insertions(+), 112 deletions(-)
>>>> copy arch/riscv/boot/dts/sophgo/{cv1800b.dtsi => cv180x.dtsi} (80%)
>>>>
>>>> diff --git a/arch/riscv/boot/dts/sophgo/cv1800b.dtsi b/arch/riscv/boot/dts/sophgo/cv1800b.dtsi
>>>> index df40e87ee063..0904154f9829 100644
>>>> --- a/arch/riscv/boot/dts/sophgo/cv1800b.dtsi
>>>> +++ b/arch/riscv/boot/dts/sophgo/cv1800b.dtsi
>>>> @@ -3,106 +3,13 @@
>>>> * Copyright (C) 2023 Jisheng Zhang <jszhang@kernel.org>
>>>> */
>>>>
>>>> -#include <dt-bindings/interrupt-controller/irq.h>
>>>> +#include "cv180x.dtsi"
>>>>
>>>> / {
>>>> compatible = "sophgo,cv1800b";
>>>> - #address-cells = <1>;
>>>> - #size-cells = <1>;
>>>> -
>>>> - cpus: cpus {
>>>> - #address-cells = <1>;
>>>> - #size-cells = <0>;
>>>> - timebase-frequency = <25000000>;
>>>> -
>>>> - cpu0: cpu@0 {
>>>> - compatible = "thead,c906", "riscv";
>>>> - device_type = "cpu";
>>>> - reg = <0>;
>>>> - d-cache-block-size = <64>;
>>>> - d-cache-sets = <512>;
>>>> - d-cache-size = <65536>;
>>>> - i-cache-block-size = <64>;
>>>> - i-cache-sets = <128>;
>>>> - i-cache-size = <32768>;
>>>> - mmu-type = "riscv,sv39";
>>>> - riscv,isa = "rv64imafdc";
>>>> - riscv,isa-base = "rv64i";
>>>> - riscv,isa-extensions = "i", "m", "a", "f", "d", "c", "zicntr", "zicsr",
>>>> - "zifencei", "zihpm";
>>>> -
>>>> - cpu0_intc: interrupt-controller {
>>>> - compatible = "riscv,cpu-intc";
>>>> - interrupt-controller;
>>>> - #address-cells = <0>;
>>>> - #interrupt-cells = <1>;
>>>> - };
>>>> - };
>>>> - };
>>>> -
>>>> - osc: oscillator {
>>>> - compatible = "fixed-clock";
>>>> - clock-output-names = "osc_25m";
>>>> - #clock-cells = <0>;
>>>> - };
>>>>
>>>> soc {
>>>> - compatible = "simple-bus";
>>>> interrupt-parent = <&plic>;
>>>> - #address-cells = <1>;
>>>> - #size-cells = <1>;
>>>> - dma-noncoherent;
>>>> - ranges;
>>>> -
>>>> - uart0: serial@4140000 {
>>>> - compatible = "snps,dw-apb-uart";
>>>> - reg = <0x04140000 0x100>;
>>>> - interrupts = <44 IRQ_TYPE_LEVEL_HIGH>;
>>>> - clocks = <&osc>;
>>>> - reg-shift = <2>;
>>>> - reg-io-width = <4>;
>>>> - status = "disabled";
>>>> - };
>>>> -
>>>> - uart1: serial@4150000 {
>>>> - compatible = "snps,dw-apb-uart";
>>>> - reg = <0x04150000 0x100>;
>>>> - interrupts = <45 IRQ_TYPE_LEVEL_HIGH>;
>>>> - clocks = <&osc>;
>>>> - reg-shift = <2>;
>>>> - reg-io-width = <4>;
>>>> - status = "disabled";
>>>> - };
>>>> -
>>>> - uart2: serial@4160000 {
>>>> - compatible = "snps,dw-apb-uart";
>>>> - reg = <0x04160000 0x100>;
>>>> - interrupts = <46 IRQ_TYPE_LEVEL_HIGH>;
>>>> - clocks = <&osc>;
>>>> - reg-shift = <2>;
>>>> - reg-io-width = <4>;
>>>> - status = "disabled";
>>>> - };
>>>> -
>>>> - uart3: serial@4170000 {
>>>> - compatible = "snps,dw-apb-uart";
>>>> - reg = <0x04170000 0x100>;
>>>> - interrupts = <47 IRQ_TYPE_LEVEL_HIGH>;
>>>> - clocks = <&osc>;
>>>> - reg-shift = <2>;
>>>> - reg-io-width = <4>;
>>>> - status = "disabled";
>>>> - };
>>>> -
>>>> - uart4: serial@41c0000 {
>>>> - compatible = "snps,dw-apb-uart";
>>>> - reg = <0x041c0000 0x100>;
>>>> - interrupts = <48 IRQ_TYPE_LEVEL_HIGH>;
>>>> - clocks = <&osc>;
>>>> - reg-shift = <2>;
>>>> - reg-io-width = <4>;
>>>> - status = "disabled";
>>>> - };
>>>>
>>>> plic: interrupt-controller@70000000 {
>>>> compatible = "sophgo,cv1800b-plic", "thead,c900-plic";
>>>> diff --git a/arch/riscv/boot/dts/sophgo/cv1800b.dtsi b/arch/riscv/boot/dts/sophgo/cv180x.dtsi
>>>> similarity index 80%
>>>> copy from arch/riscv/boot/dts/sophgo/cv1800b.dtsi
>>>> copy to arch/riscv/boot/dts/sophgo/cv180x.dtsi
>>>> index df40e87ee063..ffaf51724c98 100644
>>>
>>> Firstly, this form of diff really threw me, I was quite confused for a
>>> few minutes. A copy plus a pair of diffs doesn't really make much sense,
>>> when the operation being carried is an extraction of some nodes to a
>>> different file.
>>>
>>
>> I was told to use -C/-M/-B to generate patch, and the git format-patch
>> give me this wired output if I use -C, using -M seems no change from v1.
>> The -B output is also disappointing. Maybe I need to generate agaion?
>
>I don't think generating it again is going to change the outcome & I
>don't really think the -C version of this patch makes much sense, it is
>hard to tell what has actually been moved.
>
I mean regenerating without -C, This shows the the code move, but it gives
a huge output, since the git can not detect this move and output all the
moved line in the diff as changed.
>> The v1 version:
>> https://lore.kernel.org/linux-riscv/IA1PR20MB495360B632D106BBB833D82ABBCFA@IA1PR20MB4953.namprd20.prod.outlook.com/
>>
>>>> --- a/arch/riscv/boot/dts/sophgo/cv1800b.dtsi
>>>> +++ b/arch/riscv/boot/dts/sophgo/cv180x.dtsi
>>>> @@ -1,12 +1,12 @@
>>>> // SPDX-License-Identifier: (GPL-2.0 OR MIT)
>>>> /*
>>>> * Copyright (C) 2023 Jisheng Zhang <jszhang@kernel.org>
>>>> + * Copyright (C) 2023 Inochi Amaoto <inochiama@outlook.com>
>>>
>>> Also, is moving around some bits of hw description really a
>>> copyrightable change?
>>>
>>
>> It seems to be a mistake when I splitting the patch from v1.
>> This copyright should in the next patch.
>>
>>>> */
>>>>
>>>> #include <dt-bindings/interrupt-controller/irq.h>
>>>>
>>>> / {
>>>> - compatible = "sophgo,cv1800b";
>>>> #address-cells = <1>;
>>>> #size-cells = <1>;
>>>>
>>>> @@ -48,7 +48,6 @@ osc: oscillator {
>>>>
>>>> soc {
>>>> compatible = "simple-bus";
>>>> - interrupt-parent = <&plic>;
>>>> #address-cells = <1>;
>>>> #size-cells = <1>;
>>>> dma-noncoherent;
>>>> @@ -103,21 +102,5 @@ uart4: serial@41c0000 {
>>>> reg-io-width = <4>;
>>>> status = "disabled";
>>>> };
>>>> -
>>>> - plic: interrupt-controller@70000000 {
>>>> - compatible = "sophgo,cv1800b-plic", "thead,c900-plic";
>>>> - reg = <0x70000000 0x4000000>;
>>>> - interrupts-extended = <&cpu0_intc 11>, <&cpu0_intc 9>;
>>>> - interrupt-controller;
>>>> - #address-cells = <0>;
>>>> - #interrupt-cells = <2>;
>>>> - riscv,ndev = <101>;
>>>> - };
>>>> -
>>>> - clint: timer@74000000 {
>>>> - compatible = "sophgo,cv1800b-clint", "thead,c900-clint";
>>>> - reg = <0x74000000 0x10000>;
>>>> - interrupts-extended = <&cpu0_intc 3>, <&cpu0_intc 7>;
>>>> - };
>>>> };
>>>> };
>>>
>>> What I wanted to comment on was this though - it seems that both the
>>> cv1800b and the cv1812h have identical plic and clint nodes, other than
>>> their compatibles? If that is the case, why create a cv1800b and a
>>> cv1812h specific file containing entirely new nodes, when overriding the
>>> compatible would be sufficient? Doubly so if the other SoCs in the
>>> cv18xx series are going to have identical layouts.
>>>
>>> I gave it a quick test locally with the below diff applied on top of
>>> this series - although I didn't make sure that I didn't re-order the
>>> plic & clint nodes, I just wanted to demonstrate what I had done.
>>>
>>
>> Thanks for demonstration. AFAIK, what you said is true. the most devices
>> of CV180x and CV181x are the same, including plic and clint. The reason I
>> used a new one is to identify these two devices without making the
>> compatible string confusing.
>> Should I change the binding name of plic and clint to "sophgo,cv1800-xxx"
>> to mark there are the same series? I think this can avoid this confusing
>> dt nodes.
>
>I personally don't find the compatibles (or the dt nodes) confusing, so
>I dunno. Having reusing the compatible is not something that I am a fan of
>either, since this seems to be a different soc (given the sram &
>coprocessor etc) even if the addresses of the peripherals are identical.
Thanks. It is more like I have misunderstood something.
>
>
^ permalink raw reply [flat|nested] 30+ messages in thread
* Re: [PATCH v2 4/7] riscv: dts: sophgo: Separate common devices from cv1800b soc
2023-10-13 9:08 ` Conor Dooley
2023-10-13 9:50 ` [PATCH v2 6/7] riscv: dts: sophgo: add initial CV1812H SoC device tree Inochi Amaoto
2023-10-13 9:52 ` [PATCH v2 6/7] riscv: dts: sophgo: Separate common devices from cv1800b soc Inochi Amaoto
@ 2023-10-14 9:04 ` Jisheng Zhang
2023-10-14 9:28 ` Conor Dooley
2 siblings, 1 reply; 30+ messages in thread
From: Jisheng Zhang @ 2023-10-14 9:04 UTC (permalink / raw)
To: Conor Dooley
Cc: Inochi Amaoto, Chao Wei, Chen Wang, Rob Herring,
Krzysztof Kozlowski, Paul Walmsley, Palmer Dabbelt, Albert Ou,
linux-kernel, devicetree, linux-riscv
On Fri, Oct 13, 2023 at 10:08:24AM +0100, Conor Dooley wrote:
> Yo,
>
> On Mon, Oct 09, 2023 at 07:26:35PM +0800, Inochi Amaoto wrote:
> > Move the cpu and the common peripherals of CV181x and CV180x to new file.
> >
...
> > };
> > };
>
> What I wanted to comment on was this though - it seems that both the
> cv1800b and the cv1812h have identical plic and clint nodes, other than
> their compatibles? If that is the case, why create a cv1800b and a
> cv1812h specific file containing entirely new nodes, when overriding the
> compatible would be sufficient? Doubly so if the other SoCs in the
> cv18xx series are going to have identical layouts.
>
> I gave it a quick test locally with the below diff applied on top of
> this series - although I didn't make sure that I didn't re-order the
> plic & clint nodes, I just wanted to demonstrate what I had done.
>
> Cheers,
> Conor.
>
> -- 8< --
>
> diff --git a/arch/riscv/boot/dts/sophgo/cv1800b-milkv-duo.dts b/arch/riscv/boot/dts/sophgo/cv1800b-milkv-duo.dts
> index 3af9e34b3bc7..a9d809a49e7a 100644
> --- a/arch/riscv/boot/dts/sophgo/cv1800b-milkv-duo.dts
> +++ b/arch/riscv/boot/dts/sophgo/cv1800b-milkv-duo.dts
> @@ -5,7 +5,7 @@
>
> /dts-v1/;
>
> -#include "cv1800b.dtsi"
> +#include "cv180x.dtsi"
>
> / {
> model = "Milk-V Duo";
> diff --git a/arch/riscv/boot/dts/sophgo/cv1800b.dtsi b/arch/riscv/boot/dts/sophgo/cv1800b.dtsi
> index 0904154f9829..e69de29bb2d1 100644
> --- a/arch/riscv/boot/dts/sophgo/cv1800b.dtsi
> +++ b/arch/riscv/boot/dts/sophgo/cv1800b.dtsi
> @@ -1,30 +0,0 @@
> -// SPDX-License-Identifier: (GPL-2.0 OR MIT)
> -/*
> - * Copyright (C) 2023 Jisheng Zhang <jszhang@kernel.org>
> - */
> -
> -#include "cv180x.dtsi"
> -
> -/ {
> - compatible = "sophgo,cv1800b";
> -
> - soc {
> - interrupt-parent = <&plic>;
> -
> - plic: interrupt-controller@70000000 {
> - compatible = "sophgo,cv1800b-plic", "thead,c900-plic";
> - reg = <0x70000000 0x4000000>;
> - interrupts-extended = <&cpu0_intc 11>, <&cpu0_intc 9>;
> - interrupt-controller;
> - #address-cells = <0>;
> - #interrupt-cells = <2>;
> - riscv,ndev = <101>;
> - };
> -
> - clint: timer@74000000 {
> - compatible = "sophgo,cv1800b-clint", "thead,c900-clint";
> - reg = <0x74000000 0x10000>;
> - interrupts-extended = <&cpu0_intc 3>, <&cpu0_intc 7>;
> - };
> - };
> -};
> diff --git a/arch/riscv/boot/dts/sophgo/cv180x.dtsi b/arch/riscv/boot/dts/sophgo/cv180x.dtsi
> index 64ffb23d3626..1a2c44ba4de9 100644
> --- a/arch/riscv/boot/dts/sophgo/cv180x.dtsi
> +++ b/arch/riscv/boot/dts/sophgo/cv180x.dtsi
> @@ -48,6 +48,7 @@ osc: oscillator {
>
> soc {
> compatible = "simple-bus";
> + interrupt-parent = <&plic>;
> #address-cells = <1>;
> #size-cells = <1>;
> dma-noncoherent;
> @@ -174,5 +175,21 @@ uart4: serial@41c0000 {
> reg-io-width = <4>;
> status = "disabled";
> };
> +
> + plic: interrupt-controller@70000000 {
> + compatible = "sophgo,cv1800b-plic", "thead,c900-plic";
> + reg = <0x70000000 0x4000000>;
> + interrupts-extended = <&cpu0_intc 11>, <&cpu0_intc 9>;
> + interrupt-controller;
> + #address-cells = <0>;
> + #interrupt-cells = <2>;
> + riscv,ndev = <101>;
> + };
> +
> + clint: timer@74000000 {
> + compatible = "sophgo,cv1800b-clint", "thead,c900-clint";
> + reg = <0x74000000 0x10000>;
> + interrupts-extended = <&cpu0_intc 3>, <&cpu0_intc 7>;
> + };
> };
> };
> diff --git a/arch/riscv/boot/dts/sophgo/cv1812h.dtsi b/arch/riscv/boot/dts/sophgo/cv1812h.dtsi
> index 3864d34b0100..c0a8d3290cc8 100644
> --- a/arch/riscv/boot/dts/sophgo/cv1812h.dtsi
> +++ b/arch/riscv/boot/dts/sophgo/cv1812h.dtsi
> @@ -15,22 +15,13 @@ memory@80000000 {
> };
>
> soc {
> - interrupt-parent = <&plic>;
>
> plic: interrupt-controller@70000000 {
> compatible = "sophgo,cv1812h-plic", "thead,c900-plic";
Hi Conor,
Maybe this has been discussed before but I didn't find it. I'm wondering
the reason of adding each plic and clint binding for each SoC, can we
just use the thead,c900-plic for plic?
FWICT, arm gic dt usage follows this way, there's no binding for each SoC's
gic but directly use "arm,gic-v3" and so on.
Thanks in advance
> - reg = <0x70000000 0x4000000>;
> - interrupts-extended = <&cpu0_intc 11>, <&cpu0_intc 9>;
> - interrupt-controller;
> - #address-cells = <0>;
> - #interrupt-cells = <2>;
> - riscv,ndev = <101>;
> };
>
> clint: timer@74000000 {
> compatible = "sophgo,cv1812h-clint", "thead,c900-clint";
> - reg = <0x74000000 0x10000>;
> - interrupts-extended = <&cpu0_intc 3>, <&cpu0_intc 7>;
^ permalink raw reply [flat|nested] 30+ messages in thread* Re: [PATCH v2 4/7] riscv: dts: sophgo: Separate common devices from cv1800b soc
2023-10-14 9:04 ` Jisheng Zhang
@ 2023-10-14 9:28 ` Conor Dooley
0 siblings, 0 replies; 30+ messages in thread
From: Conor Dooley @ 2023-10-14 9:28 UTC (permalink / raw)
To: Jisheng Zhang
Cc: Inochi Amaoto, Chao Wei, Chen Wang, Rob Herring,
Krzysztof Kozlowski, Paul Walmsley, Palmer Dabbelt, Albert Ou,
linux-kernel, devicetree, linux-riscv
[-- Attachment #1: Type: text/plain, Size: 590 bytes --]
> Maybe this has been discussed before but I didn't find it. I'm wondering
> the reason of adding each plic and clint binding for each SoC, can we
> just use the thead,c900-plic for plic?
> FWICT, arm gic dt usage follows this way, there's no binding for each SoC's
> gic but directly use "arm,gic-v3" and so on.
I'm not aware of why the gic-v3 is done like this, but having different
compatibles allows differentiation between implementations/integrations
of this interrupt controller. I think having that ability is especially
helpful given T-Head have open-sourced a bunch of their IP.
[-- Attachment #2: signature.asc --]
[-- Type: application/pgp-signature, Size: 228 bytes --]
^ permalink raw reply [flat|nested] 30+ messages in thread