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author | Sascha Hauer <s.hauer@pengutronix.de> | 2020-02-14 09:05:53 +0100 |
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committer | Sascha Hauer <s.hauer@pengutronix.de> | 2020-02-18 08:32:25 +0100 |
commit | 81ce4a7dec8ba066c73692e10634091b14c1e494 (patch) | |
tree | d61574b25fda47711e3efab57c7a5739de477565 /dts/Bindings/arm/stm32/mlahb.txt | |
parent | 84b7f86bef670f6751d67131738555fa53ca3f6b (diff) | |
download | barebox-81ce4a7dec8ba066c73692e10634091b14c1e494.tar.gz barebox-81ce4a7dec8ba066c73692e10634091b14c1e494.tar.xz |
dts: update to v5.6-rc1
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'dts/Bindings/arm/stm32/mlahb.txt')
-rw-r--r-- | dts/Bindings/arm/stm32/mlahb.txt | 37 |
1 files changed, 0 insertions, 37 deletions
diff --git a/dts/Bindings/arm/stm32/mlahb.txt b/dts/Bindings/arm/stm32/mlahb.txt deleted file mode 100644 index 25307aa1eb..0000000000 --- a/dts/Bindings/arm/stm32/mlahb.txt +++ /dev/null @@ -1,37 +0,0 @@ -ML-AHB interconnect bindings - -These bindings describe the STM32 SoCs ML-AHB interconnect bus which connects -a Cortex-M subsystem with dedicated memories. -The MCU SRAM and RETRAM memory parts can be accessed through different addresses -(see "RAM aliases" in [1]) using different buses (see [2]) : balancing the -Cortex-M firmware accesses among those ports allows to tune the system -performance. - -[1]: https://www.st.com/resource/en/reference_manual/dm00327659.pdf -[2]: https://wiki.st.com/stm32mpu/wiki/STM32MP15_RAM_mapping - -Required properties: -- compatible: should be "simple-bus" -- dma-ranges: describes memory addresses translation between the local CPU and - the remote Cortex-M processor. Each memory region, is declared with - 3 parameters: - - param 1: device base address (Cortex-M processor address) - - param 2: physical base address (local CPU address) - - param 3: size of the memory region. - -The Cortex-M remote processor accessed via the mlahb interconnect is described -by a child node. - -Example: -mlahb { - compatible = "simple-bus"; - #address-cells = <1>; - #size-cells = <1>; - dma-ranges = <0x00000000 0x38000000 0x10000>, - <0x10000000 0x10000000 0x60000>, - <0x30000000 0x30000000 0x60000>; - - m4_rproc: m4@10000000 { - ... - }; -}; |