[PATCH v5 0/7] Add support for Renesas RZ/Five SoC

Prabhakar
2022-10-28T17:00:31Z

From: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>

Hi All,

The RZ/Five microprocessor includes a RISC-V CPU Core (AX45MP Single)
1.0 GHz, 16-bit DDR3L/DDR4 interface. And it also has many interfaces such
as Gbit-Ether, CAN, and USB 2.0, making it ideal for applications such as
entry-class social infrastructure gateway control and industrial gateway
control.

This patch series adds initial SoC DTSi support for Renesas RZ/Five
(R9A07G043) SoC. Below is the list of IP blocks enabled in the initial
board DTS which can be used to boot via initramfs on RZ/Five SMARC EVK:
- AX45MP CPU
- CPG
- PINCTRL
- PLIC
- SCIF0
- SYSC

Useful links:
-------------
[0] https://www.renesas.com/us/en/products/microcontrollers-microprocessors/rz-mpus/rzfive-risc-v-general-purpose-microprocessors-risc-v-cpu-core-andes-ax45mp-single-10-ghz-2ch-gigabit-ethernet
[1] http://www.andestech.com/en/products-solutions/andescore-processors/riscv-ax45mp/

Patch series depends on the below patches (which are queued in the Renesas tree for v6.2):
------------------------------------------------------------------------------------
[0] https://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-devel.git/commit/?h=renesas-dt-bindings-for-v6.2&id=c27ce08b806d606cd5cd0e8252d1ed2b729b5b55
[1] https://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-devel.git/commit/?h=renesas-dt-bindings-for-v6.2&id=7dd1d57c052e88f98b9e9145461b13bca019d108
[2] https://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-devel.git/commit/?h=renesas-arm-soc-for-v6.2&id=b3acbca3c80e612478b354e43c1480c3fc15873e
[3] https://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-devel.git/commit/?h=renesas-arm-dt-for-v6.2&id=49669da644cf000eb79dbede55bd04acf3f2f0a0
[4] https://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-devel.git/commit/?h=renesas-arm-dt-for-v6.2&id=b9a0be2054964026aa58966ce9724b672f210835

v4 -> v5:
---------
* Rebased patches on -next
* Included RB tags
* Dropped patches #1 and #4 (form v4) as they are queued up by Renesas trees
* Patch #7 from v4 was not needed anymore so dropped it
* Patches #4 and #5 are new

v4: https://lore.kernel.org/all/20220920184904.90495-1-prabhakar.mahadev-lad.rj@bp.renesas.com/
v3: https://lore.kernel.org/lkml/20220915181558.354737-1-prabhakar.mahadev-lad.rj@bp.renesas.com/
v2: https://lore.kernel.org/all/20220815151451.23293-1-prabhakar.mahadev-lad.rj@bp.renesas.com/
v1: https://lore.kernel.org/lkml/20220726180623.1668-1-prabhakar.mahadev-lad.rj@bp.renesas.com/

Below are the logs from RZ/Five SMARC EVK:
------------------------------------------

/ # uname -ra;
Linux (none) 6.1.0-rc2-00036-gbad82a074f62 #145 SMP Fri Oct 28 17:18:41 BST 2022 riscv64 GNU/Linux
/ # cat /proc/cpuinfo;
processor : 0
hart : 0
isa : rv64imafdc
mmu : sv39
uarch : andestech,ax45mp
mvendorid : 0x31e
marchid : 0x8000000000008a45
mimpid : 0x500

/ # for i in machine family soc_id revision; do echo -n "$i: ";cat /sys/devices/
soc0/$i; done
machine: Renesas SMARC EVK based on r9a07g043f01
family: RZ/Five
soc_id: r9a07g043
revision: 0
/ #
/ # cat /proc/interrupts
CPU0
1: 0 SiFive PLIC 412 Level 1004b800.serial:rx err
2: 16 SiFive PLIC 414 Level 1004b800.serial:rx full
3: 402 SiFive PLIC 415 Level 1004b800.serial:tx empty
4: 0 SiFive PLIC 413 Level 1004b800.serial:break
5: 41826 RISC-V INTC 5 Edge riscv-timer
6: 10 SiFive PLIC 416 Level 1004b800.serial:rx ready
IPI0: 0 Rescheduling interrupts
IPI1: 0 Function call interrupts
IPI2: 0 CPU stop interrupts
IPI3: 0 IRQ work interrupts
IPI4: 0 Timer broadcast interrupts
/ #
/ # cat /proc/meminfo
MemTotal: 882252 kB
MemFree: 860848 kB
MemAvailable: 858608 kB
Buffers: 0 kB
Cached: 1796 kB
SwapCached: 0 kB
Active: 0 kB
Inactive: 72 kB
Active(anon): 0 kB
Inactive(anon): 72 kB
Active(file): 0 kB
Inactive(file): 0 kB
Unevictable: 1796 kB
Mlocked: 0 kB
SwapTotal: 0 kB
SwapFree: 0 kB
Dirty: 0 kB
Writeback: 0 kB
AnonPages: 108 kB
Mapped: 1200 kB
Shmem: 0 kB
KReclaimable: 6760 kB
Slab: 12360 kB
SReclaimable: 6760 kB
SUnreclaim: 5600 kB
KernelStack: 620 kB
PageTables: 32 kB
SecPageTables: 0 kB
NFS_Unstable: 0 kB
Bounce: 0 kB
WritebackTmp: 0 kB
CommitLimit: 441124 kB
Committed_AS: 592 kB
VmallocTotal: 67108864 kB
VmallocUsed: 1132 kB
VmallocChunk: 0 kB
Percpu: 84 kB
HugePages_Total: 0
HugePages_Free: 0
HugePages_Rsvd: 0
HugePages_Surp: 0
Hugepagesize: 2048 kB
Hugetlb: 0 kB
/ #
/ #

Cheers,
Prabhakar

Lad Prabhakar (7):
dt-bindings: riscv: Sort the CPU core list alphabetically
dt-bindings: riscv: Add Andes AX45MP core to the list
riscv: Kconfig.socs: Add ARCH_RENESAS kconfig option
riscv: dts: renesas: Add initial devicetree for Renesas RZ/Five SoC
riscv: dts: renesas: Add minimal DTS for Renesas RZ/Five SMARC EVK
MAINTAINERS: Add entry for Renesas RISC-V
riscv: configs: defconfig: Enable Renesas RZ/Five SoC

.../devicetree/bindings/riscv/cpus.yaml | 11 ++-
MAINTAINERS | 3 +-
arch/riscv/Kconfig.socs | 5 +
arch/riscv/boot/dts/Makefile | 1 +
arch/riscv/boot/dts/renesas/Makefile | 2 +
arch/riscv/boot/dts/renesas/r9a07g043f.dtsi | 57 ++++++++++++
.../boot/dts/renesas/r9a07g043f01-smarc.dts | 27 ++++++
.../boot/dts/renesas/rzfive-smarc-som.dtsi | 58 ++++++++++++
arch/riscv/boot/dts/renesas/rzfive-smarc.dtsi | 91 +++++++++++++++++++
arch/riscv/configs/defconfig | 3 +
10 files changed, 252 insertions(+), 6 deletions(-)
create mode 100644 arch/riscv/boot/dts/renesas/Makefile
create mode 100644 arch/riscv/boot/dts/renesas/r9a07g043f.dtsi
create mode 100644 arch/riscv/boot/dts/renesas/r9a07g043f01-smarc.dts
create mode 100644 arch/riscv/boot/dts/renesas/rzfive-smarc-som.dtsi
create mode 100644 arch/riscv/boot/dts/renesas/rzfive-smarc.dtsi

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2.25.1