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path: root/drivers/soc/renesas
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2021-06-10soc: renesas: Add support to read LSI DEVID register of RZ/G2{L,LC} SoC'sLad Prabhakar
Add support for reading the LSI DEVID register which is present in SYSC block of RZ/G2{L,LC} SoC's. Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com> Link: https://lore.kernel.org/r/20210609163717.3083-3-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2021-06-10soc: renesas: Add ARCH_R9A07G044 for the new RZ/G2L SoC'sLad Prabhakar
Add ARCH_R9A07G044 as a configuration symbol for the new Renesas RZ/G2L SoC variants. Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com> Link: https://lore.kernel.org/r/20210609153230.6967-5-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2021-03-08soc: renesas: rmobile-sysc: Mark fwnode when PM domain is addedGeert Uytterhoeven
Currently, there are two drivers binding to the R-Mobile System Controller (SYSC): - The rmobile-sysc driver registers PM domains from a core_initcall(), and does not use a platform driver, - The optional rmobile-reset driver registers a reset handler, and does use a platform driver. As fw_devlink only considers devices, commit bab2d712eeaf9d60 ("PM: domains: Mark fwnodes when their powerdomain is added/removed") works only for PM Domain drivers where the DT node is a real device node, and not for PM Domain drivers using a hierarchical representation inside a subnode. Hence if fw_devlink is enabled, probing of on-chip devices that are part of the SYSC PM domain is deferred until the optional rmobile-reset driver has been bound. If the rmobile-reset driver is not available, this will never happen, and thus lead to complete system boot failures. Fix this by explicitly marking the fwnode initialized. Suggested-by: Saravana Kannan <saravanak@google.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Saravana Kannan <saravanak@google.com> Link: https://lore.kernel.org/r/20210216123958.3180014-1-geert+renesas@glider.be
2021-03-08soc: renesas: rmobile-sysc: Remove unneeded platform includesGeert Uytterhoeven
As of commit b587288001f05c0e ("ARM: shmobile: R-Mobile: Remove legacy PM Domain code"), the R-Mobile System Controller driver no longer handles the adding of platform devices to PM Domains, but delegates that to the PM Domain core code. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20210205132141.1920137-1-geert+renesas@glider.be
2021-01-29soc: renesas: rcar-sysc: Mark device node OF_POPULATED after initGeert Uytterhoeven
The R-Car System Controller (SYSC) driver registers PM domains from an early_initcall(). It does not use a platform driver, as secondary CPU startup on R-Car H1 needs to control the CPU power domains, before initialization of the driver framework. As fw_devlink only considers devices, it does not know that the System Controller is ready. Hence probing of on-chip devices that are part of the SYSC PM domain fails if fw_devlink is enabled: probe deferral - supplier e6180000.system-controller not ready Fix this by setting the OF_POPULATED flag for the SYSC device node after successful initialization. This will make of_link_to_phandle() ignore the SYSC device node as a dependency, and consumer devices will be probed again. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Saravana Kannan <saravanak@google.com> Link: https://lore.kernel.org/r/20210128082847.2205950-1-geert+renesas@glider.be
2021-01-26soc: renesas: rcar-sysc: Use readl_poll_timeout_atomic()Geert Uytterhoeven
Replace the open-coded polling loops by calls to the readl_poll_timeout_atomic() helper macro. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se> Link: https://lore.kernel.org/r/20210125142606.1050130-1-geert+renesas@glider.be
2020-11-27soc: renesas: rmobile-sysc: Stop using __raw_*() I/O accessorsGeert Uytterhoeven
There is no reason to keep on using the __raw_{read,write}l() I/O accessors in Renesas ARM driver code. Switch to using the plain {read,write}l() I/O accessors, to have a chance that this works on big-endian. Suggested-by: Arnd Bergmann <arnd@kernel.org> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20201119125214.4065925-1-geert+renesas@glider.be
2020-10-26soc: renesas: rmobile-sysc: Fix some leaks in rmobile_init_pm_domains()Dan Carpenter
This code needs to call iounmap() on one error path. Fixes: 2173fc7cb681 ("ARM: shmobile: R-Mobile: Add DT support for PM domains") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Link: https://lore.kernel.org/r/20200923113142.GC1473821@mwanda Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2020-09-16soc: renesas: r8a779a0-sysc: Add r8a779a0 supportYoshihiro Shimoda
Add support for R-Car V3U (R8A779A0) SoC power areas and register access, because register specification differs from R-Car Gen2/3. Inspired by patches in the BSP by Tho Vu. Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Link: https://lore.kernel.org/r/1599810232-29035-5-git-send-email-yoshihiro.shimoda.uh@renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2020-09-10soc: renesas: rcar-rst: Add support for R-Car V3UYoshihiro Shimoda
Add support for R-Car V3U (R8A779A0) to the R-Car RST driver. Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Link: https://lore.kernel.org/r/1599470390-29719-12-git-send-email-yoshihiro.shimoda.uh@renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2020-09-10soc: renesas: Identify R-Car V3UYoshihiro Shimoda
Add support for identifying the R-Car V3U (R8A779A0) SoC. Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Link: https://lore.kernel.org/r/1599470390-29719-10-git-send-email-yoshihiro.shimoda.uh@renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2020-09-10soc: renesas: Sort driver description titleKuninori Morimoto
This patch sorts each driver by description title in alphabetical order. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Link: https://lore.kernel.org/r/87a6y2v54o.wl-kuninori.morimoto.gx@renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2020-09-10soc: renesas: Use ARM32/ARM64 for menu descriptionKuninori Morimoto
For easy understanding of architecture and alphabetical merging, this patch uses ARM32/ARM64 for description. This prepares for sorting the menu. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Link: https://lore.kernel.org/r/87bliiv54u.wl-kuninori.morimoto.gx@renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2020-09-01soc: renesas: Align driver description titlesKuninori Morimoto
Now, Renesas SoC drivers are under menu, but current descriptions are not aligned. This patch aligns them. - Emma Mobile EV2 - RZ/A1H (R7S72100) ... - R-Car H2 (R8A77900) ... - Renesas R-Car H3 ES1.x SoC Platform ... - R-Car H2 System Controller support - R-Car M2-W/N System Controller support - R-Car V2H System Controller support - R-Car E2 System Controller support - R-Car H3 System Controller support - R-Car M3-W System Controller support - R-Car M3-W+ System Controller support - R-Car M3-N System Controller support + SoC Platform support for Emma Mobile EV2 + SoC Platform support for RZ/A1H+ ... + SoC Platform support for R-Car H2 ... + SoC Platform support for R-Car H3 ES1.x ... + System Controller support for R-Car H2 + System Controller support for R-Car M2-W/N + System Controller support for R-Car V2H + System Controller support for R-Car E2 + System Controller support for R-Car H3 + System Controller support for R-Car M3-W + System Controller support for R-Car M3-W+ + System Controller support for R-Car M3-N Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Link: https://lore.kernel.org/r/87zh6kyedc.wl-kuninori.morimoto.gx@renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2020-08-25soc: renesas: Use menu for Renesas SoCKuninori Morimoto
Renesas related SoC settings are located on TOP level menu, thus it is very verbose. This patch groups Renesas related settings into "Renesas SoC driver support" menu. And it aligns config menu names. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Link: https://lore.kernel.org/r/87k0xxho7t.wl-kuninori.morimoto.gx@renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2020-07-13soc: renesas: rcar-rst: Add support for RZ/G2HMarian-Cristian Rotariu
Add support for RZ/G2H (R8A774E1) to the R-Car RST driver. Signed-off-by: Marian-Cristian Rotariu <marian-cristian.rotariu.rb@bp.renesas.com> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Link: https://lore.kernel.org/r/1594138692-16816-8-git-send-email-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2020-07-13soc: renesas: Identify RZ/G2HMarian-Cristian Rotariu
This patch adds support for identifying the RZ/G2H (r8a774e1) SoC. Signed-off-by: Marian-Cristian Rotariu <marian-cristian.rotariu.rb@bp.renesas.com> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Link: https://lore.kernel.org/r/1594138692-16816-2-git-send-email-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2020-07-13soc: renesas: Add Renesas R8A774E1 config optionMarian-Cristian Rotariu
Add configuration option for the RZ/G2H (R8A774E1) SoC. Signed-off-by: Marian-Cristian Rotariu <marian-cristian.rotariu.rb@bp.renesas.com> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Link: https://lore.kernel.org/r/1594138692-16816-3-git-send-email-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2020-07-13soc: renesas: rcar-sysc: Add r8a774e1 supportMarian-Cristian Rotariu
Add support for RZ/G2H (R8A774E1) SoC power areas to the R-Car SYSC driver. Signed-off-by: Marian-Cristian Rotariu <marian-cristian.rotariu.rb@bp.renesas.com> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Link: https://lore.kernel.org/r/1594138692-16816-6-git-send-email-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2020-05-04soc: renesas: Add Renesas R8A7742 config optionLad Prabhakar
Add configuration option for the RZ/G1H (R8A77420) SoC. Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Reviewed-by: Marian-Cristian Rotariu <marian-cristian.rotariu.rb@bp.renesas.com> Link: https://lore.kernel.org/r/1588197415-13747-2-git-send-email-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2020-04-30soc: renesas: rcar-rst: Add support for RZ/G1HLad Prabhakar
Add support for RZ/G1H (R8A7742) to the R-Car RST driver. Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Reviewed-by: Marian-Cristian Rotariu <marian-cristian.rotariu.rb@bp.renesas.com> Link: https://lore.kernel.org/r/1587678050-23468-6-git-send-email-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2020-04-30soc: renesas: rcar-sysc: Add R8A7742 supportLad Prabhakar
Add support for RZ/G1H (R8A7742) SoC power areas to the R-Car SYSC driver. Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Reviewed-by: Marian-Cristian Rotariu <marian-cristian.rotariu.rb@bp.renesas.com> Link: https://lore.kernel.org/r/1587678050-23468-4-git-send-email-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2020-04-03Merge tag 'arm-drivers-5.7' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc Pull ARM driver updates from Arnd Bergmann: "These are the usual updates for SoC specific device drivers and related subsystems that don't have their own top-level maintainers: - ARM SCMI/SCPI updates to allow pluggable transport layers - TEE subsystem cleanups - A new driver for the Amlogic secure power domain controller - Various driver updates for the NXP Layerscape DPAA2, NXP i.MX SCU and TI OMAP2+ sysc drivers. - Qualcomm SoC driver updates, including a new library module for "protection domain" notifications - Lots of smaller bugfixes and cleanups in other drivers" * tag 'arm-drivers-5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (70 commits) soc: fsl: qe: fix sparse warnings for ucc_slow.c soc: fsl: qe: ucc_slow: remove 0 assignment for kzalloc'ed structure soc: fsl: qe: fix sparse warnings for ucc_fast.c soc: fsl: qe: fix sparse warnings for qe_ic.c soc: fsl: qe: fix sparse warnings for ucc.c soc: fsl: qe: fix sparse warning for qe_common.c soc: fsl: qe: fix sparse warnings for qe.c soc: qcom: Fix QCOM_APR dependencies soc: qcom: pdr: Avoid uninitialized use of found in pdr_indication_cb soc: imx: drop COMPILE_TEST for IMX_SCU_SOC firmware: imx: add COMPILE_TEST for IMX_SCU driver soc: imx: gpc: fix power up sequencing soc: imx: increase build coverage for imx8m soc driver soc: qcom: apr: Add avs/audio tracking functionality dt-bindings: soc: qcom: apr: Add protection domain bindings soc: qcom: Introduce Protection Domain Restart helpers devicetree: bindings: firmware: add ipq806x to qcom_scm memory: tegra: Correct debugfs clk rate-range on Tegra124 memory: tegra: Correct debugfs clk rate-range on Tegra30 memory: tegra: Correct debugfs clk rate-range on Tegra20 ...
2020-02-21soc: renesas: Remove ARCH_R8A7795Geert Uytterhoeven
Replace the final user of CONFIG_ARCH_R8A7795 by CONFIG_ARCH_R8A77950 || CONFIG_ARCH_R8A77951, and remove the now unused CONFIG_ARCH_R8A7795 symbol definition. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20200218112449.5723-1-geert+renesas@glider.be
2020-02-17soc: renesas: rcar-sysc: Use the correct style for SPDX License IdentifierNishad Kamdar
This patch corrects the SPDX License Identifier style in header file related to Renesas Soc driver support. It assigns explicit block comment to the SPDX License Identifier. Changes made by using a script provided by Joe Perches here: https://lkml.org/lkml/2019/2/7/46. Suggested-by: Joe Perches <joe@perches.com> Signed-off-by: Nishad Kamdar <nishadkamdar@gmail.com> Link: https://lore.kernel.org/r/20200118124856.GA3421@nishad Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2020-02-10ARM: shmobile: Enable ARM_GLOBAL_TIMER on Cortex-A9 MPCore SoCsGeert Uytterhoeven
SH-Mobile AG5 and R-Car H1 SoCs are based on the Cortex-A9 MPCore, which includes a global timer. Enable the ARM global timer on these SoCs, which will be used for: - the scheduler clock, improving scheduler accuracy from 10 ms to 3 or 4 ns, - delay loops, allowing removal of calls to shmobile_init_delay() from the corresponding machine vectors. Note that when using an old DTB lacking the global timer, the kernel will still work. However, loops-per-jiffies will no longer be preset, and the delay loop will need to be calibrated during boot. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20191211135222.26770-5-geert+renesas@glider.be
2020-01-06soc: renesas: Add ARCH_R8A7795[01] for existing R-Car H3Geert Uytterhoeven
Despite using the same compatible values ("r8a7795"-based) because of historical reasons, R-Car H3 ES1.x (R8A77950) and R-Car H3 ES2.0+ (R8A77951) are really different SoCs, with different part numbers. Reflect this in the SoC configuration, by adding CONFIG_ARCH_R8A77950 and CONFIG_ARCH_R8A77951 as new config symbols. These are intended to replace CONFIG_ARCH_R8A7795, and will allow making support for early SoC revisions optional. Note that for now, CONFIG_ARCH_R8A7795 is retained, and just selects CONFIG_ARCH_R8A77950 and CONFIG_ARCH_R8A77951. This relaxes dependencies of other subsystems on the SoC configuration symbol, and provides a smooth transition path for config files through "make oldconfig". Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Tested-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Link: https://lore.kernel.org/r/20191217183841.432-6-geert+renesas@glider.be
2020-01-06soc: renesas: rcar-rst: Fix __iomem on configure callBen Dooks (Codethink)
The configure call back takes a register pointer, so should have been marked with __iomem. Add this to silence the following sparse warnings: drivers/soc/renesas/rcar-rst.c:33:22: warning: incorrect type in initializer (incompatible argument 1 (different address spaces)) drivers/soc/renesas/rcar-rst.c:33:22: expected int ( *configure )( ... ) drivers/soc/renesas/rcar-rst.c:33:22: got int ( * )( ... ) drivers/soc/renesas/rcar-rst.c:97:40: warning: incorrect type in argument 1 (different address spaces) drivers/soc/renesas/rcar-rst.c:97:40: expected void *base drivers/soc/renesas/rcar-rst.c:97:40: got void [noderef] <asn:2> *[assigned] base Signed-off-by: Ben Dooks (Codethink) <ben.dooks@codethink.co.uk> Link: https://lore.kernel.org/r/20191218135230.2610161-1-ben.dooks@codethink.co.uk Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2019-12-13soc: renesas: Remove ARCH_R8A7796Geert Uytterhoeven
All users of CONFIG_ARCH_R8A7796 have been updated to use CONFIG_ARCH_R8A77960, so the former can be removed. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20191211100510.7182-1-geert+renesas@glider.be
2019-11-01soc: renesas: rcar-sysc: Add R8A77961 supportGeert Uytterhoeven
Add support for the power areas in the Renesas R-Car M3-W+ (R8A77961) SoC to the R-Car System Controller driver. R-Car M3-W+ (aka R-Car M3-W ES3.0) is very similar to R-Car M3-W (R8A77960), which allows for both SoCs to share a driver: - R-Car M3-W+ lacks the A2VC power area, so its area must be nullified, - The existing support for the SYSCEXTMASK register added in commit 9bd645af9d2a49ac ("soc: renesas: r8a7796-sysc: Fix power request conflicts") applies to ES3.0 and later only. As R-Car M3-W+ uses a different compatible value, differentiate based on that, instead of on the ES version. Based on a patch in the BSP by Dien Pham <dien.pham.ry@renesas.com>. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Tested-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Link: https://lore.kernel.org/r/20191023123342.13100-7-geert+renesas@glider.be
2019-11-01soc: renesas: rcar-rst: Add R8A77961 supportGeert Uytterhoeven
Add support for the Reset block in the R-Car M3-W+ (R8A77961) SoC to the Renesas R-Car RST driver. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Tested-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Link: https://lore.kernel.org/r/20191023123342.13100-6-geert+renesas@glider.be
2019-11-01soc: renesas: Identify R-Car M3-W+Geert Uytterhoeven
Add support for identifying the R-Car M3-W+ (R8A77961) SoC, which shares the Product ID Number with R-Car M3-W (R8A77960), but differs in CUT Number (Ver. 3.0), and uses a different compatible value. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Tested-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Link: https://lore.kernel.org/r/20191023123342.13100-5-geert+renesas@glider.be
2019-11-01soc: renesas: Add ARCH_R8A77961 for new R-Car M3-W+Geert Uytterhoeven
Add CONFIG_ARCH_R8A77961 as a configuration symbol for the new Renesas R-Car M3-W+ (R8A77961) SoC. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Tested-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Link: https://lore.kernel.org/r/20191023123342.13100-4-geert+renesas@glider.be
2019-11-01soc: renesas: Add ARCH_R8A77960 for existing R-Car M3-WGeert Uytterhoeven
Add CONFIG_ARCH_R8A77960 as a new config symbol for R-Car M3-W (R8A77960), to replace CONFIG_ARCH_R8A7796, and avoid confusion with R-Car M3-W+ (R8A77961), which will use CONFIG_ARCH_R8A77961. Note that for now, CONFIG_ARCH_R8A7796 is retained, and just selects CONFIG_ARCH_R8A77960. This relaxes dependencies of other subsystems on the SoC configuration symbol, and provides a smooth transition path for config files through "make oldconfig". Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Link: https://lore.kernel.org/r/20191023123342.13100-3-geert+renesas@glider.be
2019-11-01soc: renesas: Rename SYSC_R8A7796 to SYSC_R8A77960Geert Uytterhoeven
Rename CONFIG_SYSC_R8A7796 for R-Car M3-W (R8A77960) to CONFIG_SYSC_R8A77960, to avoid confusion with R-Car M3-W+ (R8A77961), which will use CONFIG_SYSC_R8A77961. Rename r8a7796_sysc_info and r8a7796_sysc_init for consistency. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Link: https://lore.kernel.org/r/20191023123342.13100-2-geert+renesas@glider.be
2019-11-01soc: renesas: Add missing check for non-zero product register addressGeert Uytterhoeven
If the DTB for a device with an RZ/A2 SoC lacks a device node for the BSID register, the ID validation code falls back to using a register at address 0x0, which leads to undefined behavior (e.g. reading back a random value). This could be fixed by letting fam_rza2.reg point to the actual BSID register. However, the hardcoded fallbacks were meant for backwards compatibility with old DTBs only, not for new SoCs. Hence fix this by validating renesas_family.reg before using it. Fixes: 175f435f44b724e3 ("soc: renesas: identify RZ/A2") Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20191016143306.28995-1-geert+renesas@glider.be
2019-10-01soc: renesas: rcar-sysc: Add r8a774b1 supportBiju Das
Add support for RZ/G2N (R8A774B1) SoC power areas to the R-Car SYSC driver. Signed-off-by: Biju Das <biju.das@bp.renesas.com> Link: https://lore.kernel.org/r/1569223780-54304-1-git-send-email-biju.das@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2019-10-01soc: renesas: rcar-sysc: Remove unneeded inclusion of <linux/bug.h>Geert Uytterhoeven
No R-Car or RZ/G SYSC driver uses any of the definitions provided by <linux/bug.h>, hence there is no need to include this header file. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Link: https://lore.kernel.org/r/20190920144705.27394-1-geert+renesas@glider.be
2019-10-01soc: renesas: r8a774c0-sysc: Fix power request conflictsGeert Uytterhoeven
Describe the location and contents of the SYSCEXTMASK register on RZ/G2E, to prevent conflicts between internal and external power requests. Based on a patch in the BSP by Dien Pham <dien.pham.ry@renesas.com>. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Link: https://lore.kernel.org/r/20190920143523.23125-1-geert+renesas@glider.be
2019-10-01soc: renesas: rcar-rst: Add support for RZ/G2NBiju Das
Add support for RZ/G2N (R8A774B1) to the R-Car RST driver. Signed-off-by: Biju Das <biju.das@bp.renesas.com> Link: https://lore.kernel.org/r/1568881036-4404-5-git-send-email-biju.das@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2019-10-01soc: renesas: Identify RZ/G2NBiju Das
This patch adds support for identifying the RZ/G2N (r8a774b1) SoC. Signed-off-by: Biju Das <biju.das@bp.renesas.com> Link: https://lore.kernel.org/r/1567675844-19247-3-git-send-email-biju.das@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2019-10-01soc: renesas: Add Renesas R8A774B1 config optionBiju Das
Add configuration option for the RZ/G2N (R8A774B1) SoC. Signed-off-by: Biju Das <biju.das@bp.renesas.com> Link: https://lore.kernel.org/r/1567675844-19247-4-git-send-email-biju.das@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2019-10-01soc: renesas: r8a77990-sysc: Fix power request conflictsGeert Uytterhoeven
Describe the location and contents of the SYSCEXTMASK register on R-Car E3, to prevent conflicts between internal and external power requests. Based on a patch in the BSP by Dien Pham <dien.pham.ry@renesas.com>. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Link: https://lore.kernel.org/r/20190828113618.6672-8-geert+renesas@glider.be
2019-10-01soc: renesas: r8a77980-sysc: Fix power request conflictsGeert Uytterhoeven
Describe the location and contents of the SYSCEXTMASK register on R-Car V3H, to prevent conflicts between internal and external power requests. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Link: https://lore.kernel.org/r/20190828113618.6672-7-geert+renesas@glider.be
2019-10-01soc: renesas: r8a77970-sysc: Fix power request conflictsGeert Uytterhoeven
Describe the location and contents of the SYSCEXTMASK register on R-Car V3M, to prevent conflicts between internal and external power requests. Based on a patch in the BSP by Dien Pham <dien.pham.ry@renesas.com>. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Link: https://lore.kernel.org/r/20190828113618.6672-6-geert+renesas@glider.be
2019-10-01soc: renesas: r8a77965-sysc: Fix power request conflictsGeert Uytterhoeven
Describe the location and contents of the SYSCEXTMASK register on R-Car M3-N, to prevent conflicts between internal and external power requests. Based on a patch in the BSP by Dien Pham <dien.pham.ry@renesas.com>. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Link: https://lore.kernel.org/r/20190828113618.6672-5-geert+renesas@glider.be
2019-10-01soc: renesas: r8a7796-sysc: Fix power request conflictsGeert Uytterhoeven
Describe the location and contents of the SYSCEXTMASK register on R-Car M3-W, to prevent conflicts between internal and external power requests. This register does not exist on R-Car M3-W ES1.x. Based on a patch in the BSP by Dien Pham <dien.pham.ry@renesas.com>. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Link: https://lore.kernel.org/r/20190828113618.6672-4-geert+renesas@glider.be
2019-10-01soc: renesas: r8a7795-sysc: Fix power request conflictsGeert Uytterhoeven
Describe the location and contents of the SYSCEXTMASK register on R-Car H3, to prevent conflicts between internal and external power requests. This register does not exist on R-Car H3 ES1.x and ES2.x. Based on a patch in the BSP by Dien Pham <dien.pham.ry@renesas.com>. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Link: https://lore.kernel.org/r/20190828113618.6672-3-geert+renesas@glider.be
2019-10-01soc: renesas: rcar-sysc: Prepare for fixing power request conflictsGeert Uytterhoeven
Recent R-Car Gen3 SoCs added an External Request Mask Register to the System Controller (SYSC). This register allows to mask external power requests for CPU or 3DG domains, to prevent conflicts between powering off CPU cores or the 3D Graphics Engine, and changing the state of another power domain through SYSC, which could lead to CPG state machine lock-ups. Add support for making use of this register. Take into account that the register is optional, and that its location and contents are SoC-specific. Note that the issue fixed by this cannot happen in the upstream kernel, as upstream has no support for graphics acceleration yet. SoCs lacking the External Request Mask Register may need a different mitigation in the future. Inspired by a patch in the BSP by Dien Pham <dien.pham.ry@renesas.com>. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Link: https://lore.kernel.org/r/20190828113618.6672-2-geert+renesas@glider.be
2019-08-23soc: renesas: Enable ARM_ERRATA_754322 for affected Cortex-A9Geert Uytterhoeven
ARM Erratum 754322 affects Cortex-A9 revisions r2p* and r3p*. Automatically enable support code to mitigate the erratum when compiling a kernel for any of the affected Renesas SoCs: - RZ/A1: r3p0, - R-Mobile A1: r2p4, - R-Car M1A: r2p2-00rel0, - R-Car H1: r3p0, - SH-Mobile AG5: r2p2. EMMA Mobile EV2 (r1p3) and RZ/A2 (r4p1) are not affected. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
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