linux-kernel - [PATCH v2 0/2] Change the sg2042 timer layout to fit aclint format

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Message-ID: <IA1PR20MB4953BB0ABD29F5AE938A54ECBBB2A@IA1PR20MB4953.namprd20.prod.outlook.com>
Date:   Tue, 14 Nov 2023 08:44:02 +0800
From:   Inochi Amaoto <inochiama@...look.com>
To:     Daniel Lezcano <daniel.lezcano@...aro.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Chao Wei <chao.wei@...hgo.com>,
        Chen Wang <unicorn_wang@...look.com>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Inochi Amaoto <inochiama@...look.com>,
        Xiaoguang Xing <xiaoguang.xing@...hgo.com>,
        Guo Ren <guoren@...nel.org>
Cc:     Jisheng Zhang <jszhang@...nel.org>, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, linux-riscv@...ts.infradead.org
Subject: [PATCH v2 0/2] Change the sg2042 timer layout to fit aclint format

As the sg2042 uses different address for timer and mswi of its clint
device, it should follow the aclint format. For the previous patchs,
it only use only one address for both mtime and mtimer, this is can
not be parsed by OpenSBI. To resolve this, separate these two registers
in the dtb.

Link: https://lists.infradead.org/pipermail/opensbi/2023-October/005693.html
Link: https://github.com/riscv/riscv-aclint/blob/main/riscv-aclint.adoc

Changed from v1:
1. change the commit to address the reason for ABI change.
2. remove unnecessary link in the commit.

Inochi Amaoto (2):
  dt-bindings: timer: thead,c900-aclint-mtimer: separate mtime and
    mtimecmp regs
  riscv: dts: sophgo: separate sg2042 mtime and mtimecmp to fit aclint
    format

 .../timer/thead,c900-aclint-mtimer.yaml       |  5 +-
 arch/riscv/boot/dts/sophgo/sg2042.dtsi        | 80 +++++++++++--------
 2 files changed, 51 insertions(+), 34 deletions(-)

--
2.42.1