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Sun, 17 May 2026 01:05:03 -0700 (PDT) From: Shubham Chakraborty To: Guenter Roeck , Florian Fainelli , Jonathan Corbet Cc: Shuah Khan , Broadcom internal kernel review list , Ray Jui , Scott Branden , linux-hwmon@vger.kernel.org, linux-doc@vger.kernel.org, linux-rpi-kernel@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Shubham Chakraborty Subject: [PATCH v3 1/3] soc: bcm2835: raspberrypi-firmware: Add voltage domain IDs Date: Sun, 17 May 2026 13:34:43 +0530 Message-ID: <20260517080445.103962-2-chakrabortyshubham66@gmail.com> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260517080445.103962-1-chakrabortyshubham66@gmail.com> References: <20260516164407.25255-1-chakrabortyshubham66@gmail.com> <20260517080445.103962-1-chakrabortyshubham66@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Add Raspberry Pi firmware voltage domain identifiers for the mailbox property interface. Also add the voltage request structure used with RPI_FIRMWARE_GET_VOLTAGE so firmware clients can share the common API definition from the firmware header. Signed-off-by: Shubham Chakraborty --- include/soc/bcm2835/raspberrypi-firmware.h | 25 ++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/include/soc/bcm2835/raspberrypi-firmware.h b/include/soc/bcm2835/raspberrypi-firmware.h index e1f87fbfe554..975bef529854 100644 --- a/include/soc/bcm2835/raspberrypi-firmware.h +++ b/include/soc/bcm2835/raspberrypi-firmware.h @@ -156,6 +156,31 @@ enum rpi_firmware_clk_id { RPI_FIRMWARE_NUM_CLK_ID, }; +enum rpi_firmware_volt_id { + RPI_FIRMWARE_VOLT_ID_CORE = 1, + RPI_FIRMWARE_VOLT_ID_SDRAM_C = 2, + RPI_FIRMWARE_VOLT_ID_SDRAM_P = 3, + RPI_FIRMWARE_VOLT_ID_SDRAM_I = 4, + RPI_FIRMWARE_NUM_VOLT_ID, +}; + +/** + * struct rpi_firmware_get_voltage_request - Firmware request for a voltage + * @id: ID of the voltage being queried + * @value: Voltage in microvolts. Set by the firmware. + * + * Used by @RPI_FIRMWARE_GET_VOLTAGE. + */ +struct rpi_firmware_get_voltage_request { + __le32 id; + __le32 value; +} __packed; + +#define RPI_FIRMWARE_GET_VOLTAGE_REQUEST(_id) \ + { \ + .id = cpu_to_le32(_id), \ + } + /** * struct rpi_firmware_clk_rate_request - Firmware Request for a rate * @id: ID of the clock being queried -- 2.54.0