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| author | Nicolas Saenz Julienne <nsaenzjulienne@suse.de> | 2020-05-05 18:13:15 +0200 |
|---|---|---|
| committer | Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> | 2020-05-13 11:53:23 +0200 |
| commit | fbbc5ff3f7f9f4cad562e530ae2cf5d8964fe6d3 (patch) | |
| tree | cd4296b3a826dae9c72e22ad13e2cd8e038559e1 /include/soc | |
| parent | soc: bcm2835: Add notify xHCI reset property (diff) | |
| download | linux-fbbc5ff3f7f9f4cad562e530ae2cf5d8964fe6d3.tar.xz linux-fbbc5ff3f7f9f4cad562e530ae2cf5d8964fe6d3.zip | |
firmware: raspberrypi: Introduce vl805 init routine
The Raspberry Pi 4 gets its USB functionality from VL805, a PCIe chip
that implements xHCI. After a PCI reset, VL805's firmware may either be
loaded directly from an EEPROM or, if not present, by the SoC's
co-processor, VideoCore. RPi4's VideoCore OS contains both the non public
firmware load logic and the VL805 firmware blob. The function this patch
introduces triggers the aforementioned process.
Link: https://lore.kernel.org/r/20200505161318.26200-3-nsaenzjulienne@suse.de
Tested-by: Stefan Wahren <stefan.wahren@i2se.com>
Tested-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Diffstat (limited to 'include/soc')
| -rw-r--r-- | include/soc/bcm2835/raspberrypi-firmware.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/soc/bcm2835/raspberrypi-firmware.h b/include/soc/bcm2835/raspberrypi-firmware.h index cc9cdbc66403..3025aca3c358 100644 --- a/include/soc/bcm2835/raspberrypi-firmware.h +++ b/include/soc/bcm2835/raspberrypi-firmware.h @@ -10,6 +10,7 @@ #include <linux/of_device.h> struct rpi_firmware; +struct pci_dev; enum rpi_firmware_property_status { RPI_FIRMWARE_STATUS_REQUEST = 0, @@ -141,6 +142,7 @@ int rpi_firmware_property(struct rpi_firmware *fw, int rpi_firmware_property_list(struct rpi_firmware *fw, void *data, size_t tag_size); struct rpi_firmware *rpi_firmware_get(struct device_node *firmware_node); +int rpi_firmware_init_vl805(struct pci_dev *pdev); #else static inline int rpi_firmware_property(struct rpi_firmware *fw, u32 tag, void *data, size_t len) @@ -158,6 +160,11 @@ static inline struct rpi_firmware *rpi_firmware_get(struct device_node *firmware { return NULL; } + +static inline int rpi_firmware_init_vl805(struct pci_dev *pdev) +{ + return 0; +} #endif #endif /* __SOC_RASPBERRY_FIRMWARE_H__ */ |