- 24 Dec, 2019 5 commits
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Maxime Ripard authored
The Allwinner SoCs have a legacy set of bindings (and a drivers to support it in Linux) to support the PRCM unit found in most recent SoCs. Now that we have the DT validation in place, let's split into separate file and convert the device tree bindings for those controllers to schemas, and mark them all as deprecated. Signed-off-by: Maxime Ripard <maxime@cerno.tech> Signed-off-by: Rob Herring <robh@kernel.org>
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Maxime Ripard authored
The Allwinner SoCs have a legacy set of bindings (and a framework to support it in Linux) for their clock controllers. Now that we have the DT validation in place, let's split into separate file and convert the device tree bindings for those clocks to schemas, and mark them all as deprecated. Signed-off-by: Maxime Ripard <maxime@cerno.tech> Signed-off-by: Rob Herring <robh@kernel.org>
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Maxime Ripard authored
The Allwinner H6 SoCs use binning in order to provide binning to cpufreq which is supported in Linux, with a matching Device Tree binding. Now that we have the DT validation in place, let's convert the device tree bindings for that controller over to a YAML schemas. Signed-off-by: Maxime Ripard <maxime@cerno.tech> Signed-off-by: Rob Herring <robh@kernel.org>
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Rob Herring authored
The phandle cache was added to speed up of_find_node_by_phandle() by avoiding walking the whole DT to find a matching phandle. The implementation has several shortcomings: - The cache is designed to work on a linear set of phandle values. This is true for dtc generated DTs, but not for other cases such as Power. - The cache isn't enabled until of_core_init() and a typical system may see hundreds of calls to of_find_node_by_phandle() before that point. - The cache is freed and re-allocated when the number of phandles changes. - It takes a raw spinlock around a memory allocation which breaks on RT. Change the implementation to a fixed size and use hash_32() as the cache index. This greatly simplifies the implementation. It avoids the need for any re-alloc of the cache and taking a reference on nodes in the cache. We only have a single source of removing cache entries which is of_detach_node(). Using hash_32() removes any assumption on phandle values improving the hit rate for non-linear phandle values. The effect on linear values using hash_32() is about a 10% collision. The chances of thrashing on colliding values seems to be low. To compare performance, I used a RK3399 board which is a pretty typical system. I found that just measuring boot time as done previously is noisy and may be impacted by other things. Also bringing up secondary cores causes some issues with measuring, so I booted with 'nr_cpus=1'. With no caching, calls to of_find_node_by_phandle() take about 20124 us for 1248 calls. There's an additional 288 calls before time keeping is up. Using the average time per hit/miss with the cache, we can calculate these calls to take 690 us (277 hit / 11 miss) with a 128 entry cache and 13319 us with no cache or an uninitialized cache. Comparing the 3 implementations the time spent in of_find_node_by_phandle() is: no cache: 20124 us (+ 13319 us) 128 entry cache: 5134 us (+ 690 us) current cache: 819 us (+ 13319 us) We could move the allocation of the cache earlier to improve the current cache, but that just further complicates the situation as it needs to be after slab is up, so we can't do it when unflattening (which uses memblock). Reported-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Segher Boessenkool <segher@kernel.crashing.org> Cc: Frank Rowand <frowand.list@gmail.com> Acked-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Reviewed-by: Frank Rowand <frowand.list@gmail.com> Tested-by: Frank Rowand <frowand.list@gmail.com> Signed-off-by: Rob Herring <robh@kernel.org>
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Miquel Raynal authored
Use the upstream compatible instead of the BSP one in the example section of the DT bindings for this IP. Fixes: 3817c796 ("dt-bindings: phy: add yaml binding for rockchip,px30-dsi-dphy") Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Rob Herring <robh@kernel.org>
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- 20 Dec, 2019 2 commits
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Jacopo Mondi authored
Convert the Renesas CEU bindings description to yaml schema and remove the existing textual bindings document. Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org> Signed-off-by: Rob Herring <robh@kernel.org>
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Benjamin Gaignard authored
Convert the STM32 watchdog binding to DT schema format using json-schema Signed-off-by: Benjamin Gaignard <benjamin.gaignard@st.com> Signed-off-by: Rob Herring <robh@kernel.org>
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- 19 Dec, 2019 4 commits
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Guenter Roeck authored
Maxim MAX31730 is a 3-Channel Remote Temperature Sensor. Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Rob Herring <robh@kernel.org>
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Matthias Kaehlcke authored
Commit 7d250a06 ("Bluetooth: hci_qca: Add support for Qualcomm Bluetooth SoC WCN3991") added the compatible string 'qcom,wcn3991-bt' to the Qualcomm Bluetooth driver, however the string is not listed in the binding. Add the 'qcom,wcn3991-bt' to the supported compatible strings. Signed-off-by: Matthias Kaehlcke <mka@chromium.org> Reviewed-by: Simon Horman <simon.horman@netronome.com> Signed-off-by: Rob Herring <robh@kernel.org>
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Geert Uytterhoeven authored
Document support for the Watchdog Timer in the Renesas R-Car M3-W+ (R8A77961) SoC. No driver update is needed. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Rob Herring <robh@kernel.org>
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Geert Uytterhoeven authored
Document support for the Ethernet AVB interface in the Renesas R-Car M3-W+ (R8A77961) SoC. Update all references to R-Car M3-W from "r8a7796" to "r8a77960", to avoid confusion between R-Car M3-W (R8A77960) and M3-W+. No driver update is needed. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> Reviewed-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Signed-off-by: Rob Herring <robh@kernel.org>
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- 18 Dec, 2019 12 commits
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Maxime Ripard authored
The Allwinner SoCs have a AHCI controllers that is supported in Linux, with a matching Device Tree binding. Now that we have the DT validation in place, let's convert the device tree bindings for that controller over to a YAML schemas. Signed-off-by: Maxime Ripard <maxime@cerno.tech> [robh: 'maxItems: 1' for resets] Signed-off-by: Rob Herring <robh@kernel.org>
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Maxime Ripard authored
The older Allwinner SoCs have an MBUS controller that is used by Linux, with a matching Device Tree binding. Now that we have the DT validation in place, let's convert the device tree bindings for that controller over to a YAML schemas. Signed-off-by: Maxime Ripard <maxime@cerno.tech> Signed-off-by: Rob Herring <robh@kernel.org>
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Maxime Ripard authored
The newer Allwinner SoCs have a camera controller that is supported in Linux, with a matching Device Tree binding. Now that we have the DT validation in place, let's convert the device tree bindings for that controller over to a YAML schemas. Signed-off-by: Maxime Ripard <maxime@cerno.tech> Signed-off-by: Rob Herring <robh@kernel.org>
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Maxime Ripard authored
The Allwinner SoCs have a hardware video codec that is supported in Linux, with a matching Device Tree binding. Now that we have the DT validation in place, let's convert the device tree bindings for that controller over to a YAML schemas. Signed-off-by: Maxime Ripard <maxime@cerno.tech> Signed-off-by: Rob Herring <robh@kernel.org>
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Maxime Ripard authored
The older Allwinner SoCs have a system controller that is supported in Linux, with a matching Device Tree binding. Now that we have the DT validation in place, let's convert the device tree bindings for that controller over to a YAML schemas. Signed-off-by: Maxime Ripard <maxime@cerno.tech> [robh: fixup missing 'properties'] Signed-off-by: Rob Herring <robh@kernel.org>
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Maxime Ripard authored
The mmio-sram binding was added missing a few SRAM sections compatible for allwinner SoCs. Let's add them. Signed-off-by: Maxime Ripard <maxime@cerno.tech> Signed-off-by: Rob Herring <robh@kernel.org>
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Maxime Ripard authored
Even though the generic mmio-sram binding has a list of the sections compatible allowed, most device trees have more specific compatibles attached to those generic ones. This creates warnings at the moment, and we don't really want to cripple the generic binding with all the vendor specific combinations that would prove to be hard to maintain. Let's allow additional compatibles for the sections, and then we can have the vendor-specific bindings to reduce the scope of what's allowed exactly. Signed-off-by: Maxime Ripard <maxime@cerno.tech> Signed-off-by: Rob Herring <robh@kernel.org>
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Maxime Ripard authored
The generic SRAM binding currently only allows for child nodes of an SRAM to be called sram too. However, these are also called sections in a number of device tree, which seems a bit more accurate. Let's change the name pattern to allow both. Signed-off-by: Maxime Ripard <maxime@cerno.tech> Signed-off-by: Rob Herring <robh@kernel.org>
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Maxime Ripard authored
The Allwinner SoCs have a USB PHY controller that is supported in Linux, with a matching Device Tree binding. Now that we have the DT validation in place, let's convert the device tree bindings for that controller over to a YAML schemas. Signed-off-by: Maxime Ripard <maxime@cerno.tech> Signed-off-by: Rob Herring <robh@kernel.org>
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Benjamin Gaignard authored
Convert the STM32 DMAMUX binding to DT schema format using json-schema Signed-off-by: Benjamin Gaignard <benjamin.gaignard@st.com> Signed-off-by: Rob Herring <robh@kernel.org>
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Benjamin Gaignard authored
Convert the STM32 MDMA binding to DT schema format using json-schema Signed-off-by: Benjamin Gaignard <benjamin.gaignard@st.com> Signed-off-by: Rob Herring <robh@kernel.org>
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Benjamin Gaignard authored
Convert the STM32 DMA binding to DT schema format using json-schema Signed-off-by: Benjamin Gaignard <benjamin.gaignard@st.com> Signed-off-by: Rob Herring <robh@kernel.org>
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- 17 Dec, 2019 2 commits
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Arnaud Pouliquen authored
Convert the ML-AHB bus bindings to DT schema format using json-schema Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen@st.com> Signed-off-by: Rob Herring <robh@kernel.org>
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Benjamin Gaignard authored
Convert the STM32 RTC binding to DT schema format using json-schema Signed-off-by: Benjamin Gaignard <benjamin.gaignard@st.com> Signed-off-by: Rob Herring <robh@kernel.org>
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- 16 Dec, 2019 9 commits
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Angus Ainslie (Purism) authored
Add Shanghai Broadmobi Communication Technology Co.,Ltd. for their modem dts entries. Signed-off-by: Angus Ainslie (Purism) <angus@akkea.ca> Signed-off-by: Rob Herring <robh@kernel.org>
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Gabriel Fernandez authored
Convert the STM32MP1 RCC binding to DT schema format using json-schema. Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com> Signed-off-by: Rob Herring <robh@kernel.org>
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Alexandre Torgue authored
Convert the STM32 syscon binding to DT schema format using json-schema. Signed-off-by: Alexandre Torgue <alexandre.torgue@st.com> Signed-off-by: Rob Herring <robh@kernel.org>
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Stephan Gerhold authored
The Snowball SBC supported by arch/arm/boot/dts/ste-snowball.dts was made by CALAO Systems and uses the "calaosystems,snowball-a9500" compatible. Prepare for documenting the compatible by adding "calaosystems" to the list of vendor prefixes. Signed-off-by: Stephan Gerhold <stephan@gerhold.net> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Rob Herring <robh@kernel.org>
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Stephan Gerhold authored
Until now, device tree bindings for ST-Ericsson have been added inconsistently with one of 3 possible vendor prefixes. "stericsson" is the most commonly used vendor prefix, so deprecate "ste" and "st-ericsson". Suggested-by: Rob Herring <robh+dt@kernel.org> Signed-off-by: Stephan Gerhold <stephan@gerhold.net> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Rob Herring <robh@kernel.org>
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Stephan Gerhold authored
Unfortunately the vendor prefix for ST-Ericsson is used very inconsistently. "ste," and "stericsson," are already documented, but some things in the kernel use "st-ericsson," which is not documented yet. st-ericsson,u8500 is documented in bindings/arm/ux500/boards.txt, and is used to match the machine code and the generic DT cpufreq driver. Add it to the list of vendor prefixes. Signed-off-by: Stephan Gerhold <stephan@gerhold.net> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Rob Herring <robh@kernel.org>
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Dong Aisheng authored
Add imx8qm compatible string. Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com> Signed-off-by: Rob Herring <robh@kernel.org>
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Dong Aisheng authored
Add imx8qm compatible string. Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com> Signed-off-by: Rob Herring <robh@kernel.org>
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Dong Aisheng authored
Add imx8qm compatible string. Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com> Signed-off-by: Rob Herring <robh@kernel.org>
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- 15 Dec, 2019 6 commits
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Linus Torvalds authored
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git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdmaLinus Torvalds authored
Pull rdma fixes from Doug Ledford: "A small collection of -rc fixes. Mostly. One API addition, but that's because we wanted to use it in a fix. There's also a bug fix that is going to render the 5.5 kernel's soft-RoCE driver incompatible with all soft-RoCE versions prior, but it's required to actually implement the protocol according to the RoCE spec and required in order for the soft-RoCE driver to be able to successfully work with actual RoCE hardware. Summary: - Update Steve Wise info - Fix for soft-RoCE crc calculations (will break back compatibility, but only with the soft-RoCE driver, which has had this bug since it was introduced and it is an on-the-wire bug, but will make soft-RoCE fully compatible with real RoCE hardware) - cma init fixup - counters oops fix - fix for mlx4 init/teardown sequence - fix for mkx5 steering rules - introduce a cleanup API, which isn't a fix, but we want to use it in the next fix - fix for mlx5 memory management that uses API in previous patch" * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: IB/mlx5: Fix device memory flows IB/core: Introduce rdma_user_mmap_entry_insert_range() API IB/mlx5: Fix steering rule of drop and count IB/mlx4: Follow mirror sequence of device add during device removal RDMA/counter: Prevent auto-binding a QP which are not tracked with res rxe: correctly calculate iCRC for unaligned payloads Update mailmap info for Steve Wise RDMA/cma: add missed unregister_pernet_subsys in init failure
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git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linuxLinus Torvalds authored
Pull RISC-V fixes from Paul Walmsley: "Two minor build fixes: - Fix builds of the ELF loader when built with 'make -j1' (nommu only) - Fix CONFIG_SOC_SIFIVE builds when CONFIG_TTY is disabled (found during randconfig testing)" * tag 'riscv/for-v5.5-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: riscv: only select serial sifive if TTY is enabled riscv: Fix build dependency for loader
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git://git.kernel.org/pub/scm/linux/kernel/git/xen/tipLinus Torvalds authored
Pull xen fixes from Juergen Gross: "Two fixes: one for a resource accounting bug in some configurations and a fix for another patch which went into rc1" * tag 'for-linus-5.5b-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: xen/balloon: fix ballooned page accounting without hotplug enabled xen-blkback: prevent premature module unload
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git://git.kernel.org/pub/scm/linux/kernel/git/brodo/linuxLinus Torvalds authored
Pull ksys_mount() and ksys_dup() removal from Dominik Brodowski: "This small series replaces all in-kernel calls to the userspace-focused ksys_mount() and ksys_dup() with calls to kernel-centric functions: For each replacement of ksys_mount() with do_mount(), one needs to verify that the first and third parameter (char *dev_name, char *type) are strings allocated in kernelspace and that the fifth parameter (void *data) is either NULL or refers to a full page (only occurence in init/do_mounts.c::do_mount_root()). The second and fourth parameters (char *dir_name, unsigned long flags) are passed by ksys_mount() to do_mount() unchanged, and therefore do not require particular care. Moreover, instead of pretending to be userspace, the opening of /dev/console as stdin/stdout/stderr can be implemented using in-kernel functions as well. Thereby, ksys_dup() can be removed for good" [ This doesn't get rid of the special "kernel init runs with KERNEL_DS" case, but it at least removes _some_ of the users of "treat kernel pointers as user pointers for our magical init sequence". One day we'll hopefully be rid of it all, and can initialize our init_thread addr_limit to USER_DS. - Linus ] * 'remove-ksys-mount-dup' of git://git.kernel.org/pub/scm/linux/kernel/git/brodo/linux: fs: remove ksys_dup() init: unify opening /dev/console as stdin/stdout/stderr init: use do_mount() instead of ksys_mount() initrd: use do_mount() instead of ksys_mount() devtmpfs: use do_mount() instead of ksys_mount()
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Linus Torvalds authored
Merge tag 'Wimplicit-fallthrough-5.5-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux Pull fall through fix from Gustavo Silva: "Fix compile error on sh by marking expected switch fall-through" * tag 'Wimplicit-fallthrough-5.5-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux: sh: kgdb: Mark expected switch fall-throughs
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