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author | Sascha Hauer <s.hauer@pengutronix.de> | 2022-04-12 10:22:44 +0200 |
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committer | Sascha Hauer <s.hauer@pengutronix.de> | 2022-04-14 09:33:24 +0200 |
commit | b01786baa849369ff2345c51e63857c952a01130 (patch) | |
tree | 43970a0ff46d32b8cad45b1dc3f3ca638e04fc5e /dts/Bindings/arm/fw-cfg.txt | |
parent | 610797b376e65475f7aed1218a085ff8701da474 (diff) | |
download | barebox-b01786baa849369ff2345c51e63857c952a01130.tar.gz barebox-b01786baa849369ff2345c51e63857c952a01130.tar.xz |
dts: update to v5.18-rc1
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'dts/Bindings/arm/fw-cfg.txt')
-rw-r--r-- | dts/Bindings/arm/fw-cfg.txt | 38 |
1 files changed, 0 insertions, 38 deletions
diff --git a/dts/Bindings/arm/fw-cfg.txt b/dts/Bindings/arm/fw-cfg.txt deleted file mode 100644 index fd54e1db21..0000000000 --- a/dts/Bindings/arm/fw-cfg.txt +++ /dev/null @@ -1,38 +0,0 @@ -* QEMU Firmware Configuration bindings for ARM - -QEMU's arm-softmmu and aarch64-softmmu emulation / virtualization targets -provide the following Firmware Configuration interface on the "virt" machine -type: - -- A write-only, 16-bit wide selector (or control) register, -- a read-write, 64-bit wide data register. - -QEMU exposes the control and data register to ARM guests as memory mapped -registers; their location is communicated to the guest's UEFI firmware in the -DTB that QEMU places at the bottom of the guest's DRAM. - -The authoritative guest-side hardware interface documentation to the fw_cfg -device can be found in "docs/specs/fw_cfg.txt" in the QEMU source tree. - - -Required properties: - -- compatible: "qemu,fw-cfg-mmio". - -- reg: the MMIO region used by the device. - * Bytes 0x0 to 0x7 cover the data register. - * Bytes 0x8 to 0x9 cover the selector register. - * Further registers may be appended to the region in case of future interface - revisions / feature bits. - -Example: - -/ { - #size-cells = <0x2>; - #address-cells = <0x2>; - - fw-cfg@9020000 { - compatible = "qemu,fw-cfg-mmio"; - reg = <0x0 0x9020000 0x0 0xa>; - }; -}; |