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Mon, 4 Nov 2024 10:07:59 +0000 (GMT) From: Michal Wilczynski To: drew@pdp7.com, guoren@kernel.org, wefu@redhat.com, jassisinghbrar@gmail.com, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, paul.walmsley@sifive.com, palmer@dabbelt.com, aou@eecs.berkeley.edu, m.szyprowski@samsung.com, samuel.holland@sifive.com, emil.renner.berthing@canonical.com Cc: linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, christophe.jaillet@wanadoo.fr, Michal Wilczynski , Krzysztof Kozlowski Subject: [PATCH v6 2/3] dt-bindings: mailbox: Add thead,th1520-mailbox bindings Date: Mon, 4 Nov 2024 11:07:33 +0100 Message-Id: <20241104100734.1276116-3-m.wilczynski@samsung.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241104100734.1276116-1-m.wilczynski@samsung.com> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Brightmail-Tracker: H4sIAAAAAAAAA02Se0xbZRjG/c45nHMKdju0kH7BhSnJ2CVS2LLEL+JlmqlHTZbhDTKd2oyT snBdy2UuJuugdoyVCngbnVC2LLQyGgycditXW7ahqx61BXQbXdAKobCLg8IYRpRy6tx/z/u+ v+d73jf5aFwWjkmi9xeVcpoiVUEKGUs4L90T0kDTJnVG6y0JcvxlppDD3RSD2vsEDFkuCDHo uo/HkO+YDaCpviMEGrU1UShkvk6ivhkHhfzdX5LIOacnkf1CgEId8xYMhfxGHBnMa9E/vecp dFYYJpB+4FNih5w162pJ9kYoRLCD1WGKdZkDFNvZdoxkx0Z7SbbrzGFWb7+Esbf7R0jWxLcB 1lf1C8XOdSazc4GOmN3SPbFP5XIF+8s5Tfoz78fm3fmznio5m3zw3IgH1wGnogZIaMhsh4P2 u3gNiKVljA3Ahsp6SizCAB6fXMDEYg5Ab9iD37c0TgFxYAWwLeCPWm4AON99BItQJLMNjlst MZFBAtOBwcme1lUKZyYBrK13kRFKzmTBEef8qoNgNkCDkSciWso8CxcrL1Ni3no44P5hNVvC 7IBLtWFMZOLhd41/rPL4ClPlOBndT5DA6sGDot4Jbd/MRt+Rw+khPqrXQe8nRkLUxXDcMRv1 fghdxqGozoRjwtLKnvTK+5thR3e62H4OBlzzRKQNmTXw15vx4gZrYIPzC1xsS2G1QSbSqfAz Y+39UMHmxETNwtPGj7A68Jj5gVvMD9xi/j+3BeBtQMGVaQvVnHZbEVeh1KoKtWVFauW+4sJO sPIxvctD4fPAOn1H6QEYDTwA0nhKgrSZ26iWSXNVHxziNMXvacoKOK0HPEITKQrphtz1nIxR q0q5fI4r4TT/TTFakqTDXijMT+6femkh46uhm/7mRmnOpp0DidYrtyTe72efWJ5Z1Kf51+21 /2xpj3PWXHtduzDsOGV/k9YpW952ed+aFo5ule7ufdHyWkv98JmZpJqHf+/qn7hnTs9JHK9Q vvtOpV1uP9Fz0R8M/jh26pDnt2n95yMJpVvC7qnQxqcPZObwa3d9XSzPrstt2FP++MtxD6Vl Zl8JBk1vVPQMkjOeVl/wYjN/rq4nXHnUOpr9k/PuiRJ5uanKdlvh78x+tMR0+up2Pis/8W96 wjm8nLrPWvdt194nrx3g5anxPosrfSmoaDh8Ge+deGWzLu5VQ3L78eeFPIHn3XkZ7qtNJoLJ +tiwmEJo81Rbt+Aarepf0D1R2gcEAAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFnrMIsWRmVeSWpSXmKPExsVy+t/xu7oMczXSDTZ2Klhs/T2L3WLrwbms Fmv2nmOymH/kHKvFvUtbmCwuda5gtHixt5HF4tqKuewWL2fdY7PY+3oru8XlXXPYLLZ9bmGz WHvkLrvF+q/zmSxeXu5htmibxW/xf88OdovV566wWLTsn8LiIOwxq6GXzePNy5csHoc7vrB7 7Jx1l91j06pONo871/aweWxeUu/RsvYYk8f7fVfZPPq2rGL0uNR8nd3j8yY5j89317MG8Ebp 2RTll5akKmTkF5fYKkUbWhjpGVpa6BmZWOoZGpvHWhmZKunb2aSk5mSWpRbp2yXoZXz8MJG9 YLVcxfarh5gbGLeJdzFyckgImEgcnvmCsYuRi0NIYCmjxKK1b9kgEjIS17pfskDYwhJ/rnWx QRS9YpSYueAEWBGbgJHEg+XzWUFsEYH9TBKvzxaBFDGDFF3YdRasW1jAX+LpoyvsIDaLgKpE W88WsDivgL3Ej6ZT7BAb5CX2HzzLDGJzCjhI/Or9wgRiCwHVHDywhxGiXlDi5MwnYL3MQPXN W2czT2AUmIUkNQtJagEj0ypGkdTS4tz03GIjveLE3OLSvHS95PzcTYzA2N527OeWHYwrX33U O8TIxMF4iFGCg1lJhHdeqnq6EG9KYmVValF+fFFpTmrxIUZToLsnMkuJJucDk0teSbyhmYGp oYmZpYGppZmxkjgv25XzaUIC6YklqdmpqQWpRTB9TBycUg1MxuufLW86/Wi7x1+Htabidooe CqkVV955qV1s+r5o1xPV+7rTJxxv2dvySfhl/vt/FSeurGo6f1TpzISpSoV3Tl9RdXQXn2X3 7/60TOHMlCN7Ps+csmfO7eBXS3NNa3b23fH22X95qfITRxPZWBkZLh6p5d6804KdI4MSj+62 8Nynca54HqN6/cIrQdPYZu8Leyi4K2QrT87OiSFqF1Z93qo+7bf9b/lbr9hMdxv8i1JaFKpx JO3kCc33Za0PI1f135ZeNPFPV+9zhylTzI7O28d26EPiLsb/BwtshFZ/WtG9eNoi0Vc2Z/Km qbMucN7TrRRo3CBs/HTzKtc13Kv9r3ueutuWcW72Ow47iz9H3C2VWIozEg21mIuKEwHjvF0L dgMAAA== X-CMS-MailID: 20241104100800eucas1p15817779e9a030e74878ae39a8a99dc1e X-Msg-Generator: CA X-RootMTR: 20241104100800eucas1p15817779e9a030e74878ae39a8a99dc1e X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20241104100800eucas1p15817779e9a030e74878ae39a8a99dc1e References: <20241104100734.1276116-1-m.wilczynski@samsung.com> Add bindings for the mailbox controller. This work is based on the vendor kernel. [1] Link: https://github.com/revyos/thead-kernel.git [1] Signed-off-by: Michal Wilczynski Reviewed-by: Krzysztof Kozlowski --- .../bindings/mailbox/thead,th1520-mbox.yaml | 89 +++++++++++++++++++ MAINTAINERS | 1 + 2 files changed, 90 insertions(+) create mode 100644 Documentation/devicetree/bindings/mailbox/thead,th1520-mbox.yaml diff --git a/Documentation/devicetree/bindings/mailbox/thead,th1520-mbox.yaml b/Documentation/devicetree/bindings/mailbox/thead,th1520-mbox.yaml new file mode 100644 index 000000000000..0971fb97896e --- /dev/null +++ b/Documentation/devicetree/bindings/mailbox/thead,th1520-mbox.yaml @@ -0,0 +1,89 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/mailbox/thead,th1520-mbox.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: T-head TH1520 Mailbox Controller + +description: + The T-head mailbox controller enables communication and coordination between + cores within the SoC by passing messages (e.g., data, status, and control) + through mailbox channels. It also allows one core to signal another processor + using interrupts via the Interrupt Controller Unit (ICU). + +maintainers: + - Michal Wilczynski + +properties: + compatible: + const: thead,th1520-mbox + + clocks: + items: + - description: Clock for the local mailbox + - description: Clock for remote ICU 0 + - description: Clock for remote ICU 1 + - description: Clock for remote ICU 2 + + clock-names: + items: + - const: clk-local + - const: clk-remote-icu0 + - const: clk-remote-icu1 + - const: clk-remote-icu2 + + reg: + items: + - description: Mailbox local base address + - description: Remote ICU 0 base address + - description: Remote ICU 1 base address + - description: Remote ICU 2 base address + + reg-names: + items: + - const: local + - const: remote-icu0 + - const: remote-icu1 + - const: remote-icu2 + + interrupts: + maxItems: 1 + + '#mbox-cells': + const: 1 + description: + The one and only cell describes destination CPU ID. + +required: + - compatible + - clocks + - clock-names + - reg + - reg-names + - interrupts + - '#mbox-cells' + +additionalProperties: false + +examples: + - | + #include + soc { + #address-cells = <2>; + #size-cells = <2>; + mailbox@ffffc38000 { + compatible = "thead,th1520-mbox"; + reg = <0xff 0xffc38000 0x0 0x4000>, + <0xff 0xffc44000 0x0 0x1000>, + <0xff 0xffc4c000 0x0 0x1000>, + <0xff 0xffc54000 0x0 0x1000>; + reg-names = "local", "remote-icu0", "remote-icu1", "remote-icu2"; + clocks = <&clk CLK_MBOX0>, <&clk CLK_MBOX1>, <&clk CLK_MBOX2>, + <&clk CLK_MBOX3>; + clock-names = "clk-local", "clk-remote-icu0", "clk-remote-icu1", + "clk-remote-icu2"; + interrupts = <28>; + #mbox-cells = <1>; + }; + }; diff --git a/MAINTAINERS b/MAINTAINERS index df36684221ff..506cdea74694 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -19816,6 +19816,7 @@ L: linux-riscv@lists.infradead.org S: Maintained T: git https://github.com/pdp7/linux.git F: Documentation/devicetree/bindings/clock/thead,th1520-clk-ap.yaml +F: Documentation/devicetree/bindings/mailbox/thead,th1520-mbox.yaml F: arch/riscv/boot/dts/thead/ F: drivers/clk/thead/clk-th1520-ap.c F: drivers/mailbox/mailbox-th1520.c