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Fri, 19 Feb 2021 09:27:34 -0500 (EST) From: Andrew Jeffery To: openipmi-developer@lists.sourceforge.net, openbmc@lists.ozlabs.org, minyard@acm.org Subject: [PATCH 17/19] dt-bindings: ipmi: Add optional SerIRQ property to ASPEED KCS devices Date: Sat, 20 Feb 2021 00:55:21 +1030 Message-Id: <20210219142523.3464540-18-andrew@aj.id.au> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20210219142523.3464540-1-andrew@aj.id.au> References: <20210219142523.3464540-1-andrew@aj.id.au> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210219_092741_863021_C66C3F93 X-CRM114-Status: GOOD ( 12.18 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, tmaimon77@gmail.com, linux-aspeed@lists.ozlabs.org, linux-gpio@vger.kernel.org, avifishman70@gmail.com, venture@google.com, linus.walleij@linaro.org, linux-kernel@vger.kernel.org, tali.perry1@gmail.com, yuenn@google.com, robh+dt@kernel.org, joel@jms.id.au, lee.jones@linaro.org, chiawei_wang@aspeedtech.com, linux-arm-kernel@lists.infradead.org, benjaminfair@google.com Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Allocating IO and IRQ resources to LPC devices is in-theory an operation for the host, however ASPEED don't appear to expose this capability outside the BMC (e.g. SuperIO). Instead, we are left with BMC-internal registers for managing these resources, so introduce a devicetree property for KCS devices to describe SerIRQ properties. Signed-off-by: Andrew Jeffery --- .../bindings/ipmi/aspeed,ast2400-kcs-bmc.yaml | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/Documentation/devicetree/bindings/ipmi/aspeed,ast2400-kcs-bmc.yaml b/Documentation/devicetree/bindings/ipmi/aspeed,ast2400-kcs-bmc.yaml index 1c1cc4265948..808475a2c2ca 100644 --- a/Documentation/devicetree/bindings/ipmi/aspeed,ast2400-kcs-bmc.yaml +++ b/Documentation/devicetree/bindings/ipmi/aspeed,ast2400-kcs-bmc.yaml @@ -47,6 +47,18 @@ properties: channels the status address is derived from the data address, but the status address may be optionally provided. + aspeed,lpc-interrupts: + $ref: "/schemas/types.yaml#/definitions/uint32-matrix" + minItems: 1 + maxItems: 1 + description: | + A 2-cell property expressing the LPC SerIRQ number and the interrupt + level/sense encoding (specified in the standard fashion). + + Note that the generated interrupt is issued from the BMC to the host, and + thus the target interrupt controller is not captured by the BMC's + devicetree. + kcs_chan: deprecated: true $ref: '/schemas/types.yaml#/definitions/uint32' @@ -84,9 +96,11 @@ allOf: examples: - | + #include kcs3: kcs@24 { compatible = "aspeed,ast2600-kcs-bmc"; reg = <0x24 0x1>, <0x30 0x1>, <0x3c 0x1>; aspeed,lpc-io-reg = <0xca2>; + aspeed,lpc-interrupts = <11 IRQ_TYPE_LEVEL_LOW>; interrupts = <8>; };