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Tue, 20 Feb 2024 04:59:36 -0800 (PST) Received: from [127.0.1.1] ([188.24.162.93]) by smtp.gmail.com with ESMTPSA id rf23-20020a1709076a1700b00a3ce36ce4f9sm3948802ejc.83.2024.02.20.04.59.35 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 20 Feb 2024 04:59:36 -0800 (PST) From: Abel Vesa Subject: [PATCH RFC v4 0/4] spmi: pmic-arb: Add support for multiple buses Date: Tue, 20 Feb 2024 14:59:20 +0200 Message-Id: <20240220-spmi-multi-master-support-v4-0-dc813c878ba8@linaro.org> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-B4-Tracking: v=1; b=H4sIACii1GUC/43OzQrCMAwH8FeRno2kH1rnSRB8AK/iod3SrTDX0 c6hyN7dspMiiJfAPyG/5MkSRU+J7RZPFmn0yYcuB7VcsLIxXU3gq5yZQKFQoIbUXz1cb+2Qq0k DRUi3vg9xgK0URqOyWheW5f0+kvP32T6z0/HALrnZ+DSE+JjvjXwe/UGPHBBKWmsnkZfaVfvWd yaGVYj1zI7ijeLyFyWAg5WWo5BiU+Dmi5LvlPpFyfwVWkNIDpUz7oOapukF2ag4j14BAAA= To: Stephen Boyd , Matthias Brugger , Bjorn Andersson , Konrad Dybcio , Dmitry Baryshkov , Neil Armstrong , AngeloGioacchino Del Regno , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: Srini Kandagatla , Johan Hovold , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-mediatek@lists.infradead.org, devicetree@vger.kernel.org, Abel Vesa X-Mailer: b4 0.13.0 X-Developer-Signature: v=1; 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a=openpgp; fpr=6AFF162D57F4223A8770EF5AF7BF214136F41FAE This RFC prepares for and adds support for 2 buses, which is supported in HW starting with version 7. Until now, none of the currently supported platforms in upstream have used the second bus. The X1E80100 platform, on the other hand, needs the second bus for the USB2.0 to work as there are 3 SMB2360 PMICs which provide eUSB2 repeaters and they are all found on the second bus. Signed-off-by: Abel Vesa --- Changes in v4: - Fixed comment above pmic_arb_init_apid_v7 by dropping the extra "bus" word - Swicthed to devm_platform_ioremap_resource_byname for obsrvr and chnls. The core remains with platform_get_resource_byname as we need the core size. - Dropped comment from probe related to the need of platform_get_resource_byname as it not true anymore. - Dropped the qcom,bus-id optional property. - Link to v3: https://lore.kernel.org/r/20240214-spmi-multi-master-support-v3-0-0bae0ef04faf@linaro.org Changes in v3: - Split the change into 3 separate patches. First 2 patches are moving apid init and core resources into version specific ops. Third one is adding the support for 2 buses and dedicated compatible. - Added separate bindings patch - Link to v2: https://lore.kernel.org/r/20240213-spmi-multi-master-support-v2-1-b3b102326906@linaro.org Changes in v2: - Reworked it so that it registers a spmi controller for each bus rather than relying on the generic framework to pass on the bus (master) id. - Link to v1: https://lore.kernel.org/r/20240207-spmi-multi-master-support-v1-0-ce57f301c7fd@linaro.org --- Abel Vesa (4): dt-bindings: spmi: Add PMIC ARB v7 schema spmi: pmic-arb: Make the APID init a version operation spmi: pmic-arb: Make core resources acquiring a version operation spmi: pmic-arb: Add multi bus support .../bindings/spmi/qcom,spmi-pmic-arb-v7.yaml | 119 +++ drivers/spmi/spmi-pmic-arb.c | 951 +++++++++++++-------- 2 files changed, 700 insertions(+), 370 deletions(-) --- base-commit: 2d5c7b7eb345249cb34d42cbc2b97b4c57ea944e change-id: 20240207-spmi-multi-master-support-832a704b779b Best regards, -- Abel Vesa