lwn.git/arch/arm/boot/dts/vexpress-v2m.dtsi, branch docs-mw

ARM: dts: Move .dts files to vendor sub-directories

2023-06-21T17:39:50+00:00

The arm dts directory has grown to 1559 boards which makes it a bit unwieldy to maintain and use. Past attempts stalled out due to plans to move .dts files out of the kernel tree. Doing that is no longer planned (any time soon at least), so let's go ahead and group .dts files by vendors. This move aligns arm with arm64 .dts file structure. There's no change to dtbs_install as the flat structure is maintained on install. The naming of vendor directories is roughly in this order of preference: - Matching original and current SoC vendor prefix/name (e.g. ti, qcom) - Current vendor prefix/name if still actively sold (SoCs which have been aquired) (e.g. nxp/imx) - Existing platform name for older platforms not sold/maintained by any company (e.g. gemini, nspire) The whole move was scripted with the exception of MAINTAINERS and a few makefile fixups. Acked-by: Viresh Kumar Acked-by: Michal Simek #Xilinx Acked-by: Krzysztof Kozlowski Acked-by: Neil Armstrong Acked-by: Paul Barker Acked-by: Tony Lindgren Acked-by: Gregory CLEMENT Acked-by: Heiko Stuebner Acked-by: Wei Xu #hisilicon Acked-by: Geert Uytterhoeven Acked-by: Nick Hawkins Acked-by: Baruch Siach Reviewed-by: Linus Walleij Reviewed-by: Andre Przywara Acked-by: Andre Przywara Reviewed-by: Claudiu Beznea Acked-by: Peter Rosin Acked-by: Jesper Nilsson Acked-by: Sudeep Holla Acked-by: Florian Fainelli #broadcom Acked-by: Manivannan Sadhasivam Reviewed-by: Jisheng Zhang Acked-by: Patrice Chotard Acked-by: Romain Perier Acked-by: Alexandre TORGUE Acked-by: Shawn Guo Acked-by: Kunihiko Hayashi Acked-by: Enric Balletbo i Serra Signed-off-by: Rob Herring

ARM: dts: arm: align UART node name with bindings

2023-01-26T10:19:57+00:00

Bindings expect UART/serial node names to be "serial". Reviewed-by: Linus Walleij Acked-by: Sudeep Holla Link: https://lore.kernel.org/r/20230123151533.369533-1-krzysztof.kozlowski@linaro.org Signed-off-by: Krzysztof Kozlowski

ARM: dts: vexpress: align LED node names with dtschema

2022-11-25T15:48:48+00:00

The node names should be generic and DT schema expects certain pattern. vexpress-v2p-ca9.dtb: leds: 'user1', 'user2', 'user3', 'user4', 'user5', 'user6', 'user7', 'user8' do not match any of the regexes: '(^led-[0-9a-f]$|led)', 'pinctrl-[0-9]+' Signed-off-by: Krzysztof Kozlowski Link: https://lore.kernel.org/r/20221125144112.476817-1-krzysztof.kozlowski@linaro.org Signed-off-by: Sudeep Holla

arm: dts: vexpress: Fix motherboard bus 'interrupt-map'

2021-09-26T14:33:30+00:00

Commit 078fb7aa6a83 ("arm: dts: vexpress: Fix addressing issues with 'motherboard-bus' nodes") broke booting on a couple of 32-bit VExpress boards. The problem is #address-cells size changed, but interrupt-map was not updated. This results in the timer interrupt (and all the other motherboard interrupts) not getting mapped. As the 'interrupt-map' properties are all just duplicates across boards, just move them into vexpress-v2m.dtsi and vexpress-v2m-rs1.dtsi. Strictly speaking, 'interrupt-map' is dependent on the parent interrupt controller, but it's not likely we'll ever have a different parent than GICv2 on these old platforms. If there was one, 'interrupt-map' can still be overridden. Link: https://lore.kernel.org/r/20210924214221.1877686-1-robh@kernel.org Fixes: 078fb7aa6a83 ("arm: dts: vexpress: Fix addressing issues with 'motherboard-bus' nodes") Cc: Guillaume Tucker Cc: Liviu Dudau Cc: Sudeep Holla Cc: Lorenzo Pieralisi Cc: linux-arm-kernel@lists.infradead.org Reported-by: Reported-by: "kernelci.org bot" Signed-off-by: Rob Herring Signed-off-by: Sudeep Holla

arm: dts: vexpress: Fix addressing issues with 'motherboard-bus' nodes

2021-09-17T09:23:41+00:00

The 'motherboard-bus' node in Arm Ltd boards fails schema checks as 'simple-bus' child nodes must have a unit-address. The 'ranges' handling is also wrong (or at least strange) as the mapping of SMC chip selects should be in the 'arm,vexpress,v2m-p1' node rather than a generic 'simple-bus' node. Either there's 1 too many levels of 'simple-bus' nodes or 'ranges' should be moved down a level. The latter change is more simple, so let's do that. As the 'ranges' value doesn't vary for a given motherboard instance, we can move 'ranges' into the motherboard dtsi files. Link: https://lore.kernel.org/r/20210819184239.1192395-6-robh@kernel.org Cc: Andre Przywara Cc: Sudeep Holla Cc: Linus Walleij Reviewed-by: Linus Walleij Signed-off-by: Rob Herring Signed-off-by: Sudeep Holla

arm: dts: vexpress-v2p-ca9: Fix the SMB unit-address

2021-09-14T10:33:13+00:00

Based on 'ranges', the 'bus@4000000' node unit-address is off by 1 '0'. Link: https://lore.kernel.org/r/20210819184239.1192395-5-robh@kernel.org Cc: Andre Przywara Cc: Sudeep Holla Cc: Linus Walleij Reviewed-by: Linus Walleij Signed-off-by: Rob Herring Signed-off-by: Sudeep Holla

arm: dts: vexpress: Drop unused properties from motherboard node

2021-09-14T10:33:13+00:00

Drop the '#interrupt-cells' property in the motherboard node which has no effect as the node is neither an interrupt-controller or interrupt-map (that's in the parent node). Drop 'model' as it is not used by software nor documented. Drop 'arm,v2m-memory-map' as it is not used by software. The purpose was to describe which memory map, but that's all described by the DT already. Link: https://lore.kernel.org/r/20210819184239.1192395-4-robh@kernel.org Cc: Andre Przywara Cc: Sudeep Holla Cc: Linus Walleij Reviewed-by: Linus Walleij Signed-off-by: Rob Herring Signed-off-by: Sudeep Holla

usb: isp1760: use dr_mode binding

2021-05-21T18:05:32+00:00

There is already a binding to describe the dual role mode (dr_mode), use that instead of defining a new one (port1-otg). Update driver code and devicetree files that use that port1-otg binding. Signed-off-by: Rui Miguel Silva Link: https://lore.kernel.org/r/20210513084717.2487366-7-rui.silva@linaro.org Signed-off-by: Greg Kroah-Hartman

ARM: dts: arm: Fix SP805 clocks

2020-09-07T09:54:08+00:00

The SP805 binding sets the name for the actual watchdog clock to "wdog_clk" (with an underscore). Change the name in the DTs for ARM Ltd. platforms to match that. The Linux and U-Boot driver use the *first* clock for this purpose anyway, so it does not break anything. For MPS2 we only specify one clock so far, but the binding requires two clocks to be named. In practice, Linux would pick a clock named "apb_pclk" for the bus clock, and the Linux and U-Boot SP805 driver would use the first clock to derive the actual watchdog counter frequency. So since currently both are the very same clock, we can just double the clock reference, and add the correct clock-names, to match the binding. Link: https://lore.kernel.org/r/20200828130602.42203-8-andre.przywara@arm.com Reviewed-by: Linus Walleij Signed-off-by: Andre Przywara Signed-off-by: Sudeep Holla

ARM/arm64: dts: Rename SMB bus to just bus

2020-03-04T14:31:30+00:00

Discussing the YAML validation schema with the DT maintainers it came out that a bus named "smb@80000000" is not really accepted, and the schema was written to name the static memory bus just "bus@80000000". This change is necessary for the schema to kick in and validate these device trees, else the schema gets ignored. Cc: Rob Herring Acked-by: Sudeep Holla Signed-off-by: Linus Walleij