Re: [PATCH v4 04/12] riscv: dts: allwinner: Add the D1/D1s SoC devicetree

Andre Przywara
2023-01-03T15:35:23Z

On Sat, 31 Dec 2022 17:38:43 -0600
Samuel Holland <samuel@sholland.org> wrote:

Hi,

> D1 (aka D1-H), D1s (aka F133), R528, and T113 are a family of SoCs based
> on a single die, or at a pair of dies derived from the same design.
>
> D1 and D1s contain a single T-HEAD Xuantie C906 CPU, whereas R528 and
> T113 contain a pair of Cortex-A7's. D1 and R528 are the full version of
> the chip with a BGA package, whereas D1s and T113 are low-pin-count QFP
> variants.
>
> Because the original design supported both ARM and RISC-V CPUs, some
> peripherals are duplicated. In addition, all variants except D1s contain
> a HiFi 4 DSP with its own set of peripherals.
>
> The devicetrees are organized to minimize duplication:
> - Common perhiperals are described in sunxi-d1s-t113.dtsi
> - DSP-related peripherals are described in sunxi-d1-t113.dtsi
> - RISC-V specific hardware is described in sun20i-d1s.dtsi
> - Functionality unique to the D1 variant is described in sun20i-d1.dtsi
>
> The SOC_PERIPHERAL_IRQ macro handles the different #interrupt-cells
> values between the ARM (GIC) and RISC-V (PLIC) versions of the SoC.

I compared to the v2 post (which I already checked against the T113-s
manual) and did not find any extra changes apart from those mentioned in
the changelog below. As my two questions from v2 are answered:

Reviewed-by: Andre Przywara <andre.przywara@arm.com>

Many thanks,
Andre

>
> Acked-by: Jernej Skrabec <jernej.skrabec@gmail.com>
> Acked-by: Palmer Dabbelt <palmer@rivosinc.com>
> Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
> Reviewed-by: Heiko Stuebner <heiko.stuebner@vrull.eu>
> Tested-by: Heiko Stuebner <heiko.stuebner@vrull.eu>
> Signed-off-by: Samuel Holland <samuel@sholland.org>
> ---
>
> (no changes since v3)
>
> Changes in v3:
> - Drop dummy DCXO clock-frequency property
> - Decrease the PLIC's riscv,ndev property to 175
> - Fix `make W=1 dtbs` warnings (unnecessary #address/#size-cells)
>
> Changes in v2:
> - Split into separate files for sharing with D1s/R528/T113
> - Use SOC_PERIPHERAL_IRQ macro for interrupts
> - Rename osc24M to dcxo and move the frequency to the board DTs
> - Drop analog LDOs due to the missing binding
> - Correct tcon_top DSI clock reference
> - Add DMIC, DSI controller, and DPHY (bindings are in linux-next)
> - Add CPU OPP table
>
> arch/riscv/boot/dts/allwinner/sun20i-d1.dtsi | 66 ++
> arch/riscv/boot/dts/allwinner/sun20i-d1s.dtsi | 76 ++
> .../boot/dts/allwinner/sunxi-d1-t113.dtsi | 15 +
> .../boot/dts/allwinner/sunxi-d1s-t113.dtsi | 837 ++++++++++++++++++
> 4 files changed, 994 insertions(+)
> create mode 100644 arch/riscv/boot/dts/allwinner/sun20i-d1.dtsi
> create mode 100644 arch/riscv/boot/dts/allwinner/sun20i-d1s.dtsi
> create mode 100644 arch/riscv/boot/dts/allwinner/sunxi-d1-t113.dtsi
> create mode 100644 arch/riscv/boot/dts/allwinner/sunxi-d1s-t113.dtsi
>
...