kernel/git/stable/linux.git/drivers/soc/renesas/rcar-sysc.c, branch master

soc: renesas: Move power-domain drivers to the genpd dir

2023-07-14T08:40:56+00:00

To simplify with maintenance let's move the renesas power-domain drivers to the new genpd directory. Going forward, patches are intended to be managed through a separate git tree, according to MAINTAINERS. Cc: Geert Uytterhoeven Cc: Magnus Damm Cc: Signed-off-by: Ulf Hansson

soc: renesas: Move away from using OF_POPULATED for fw_devlink

2023-02-08T12:37:54+00:00

The OF_POPULATED flag was set to let fw_devlink know that the device tree node will not have a struct device created for it. This information is used by fw_devlink to avoid deferring the probe of consumers of this device tree node. Let's use fwnode_dev_initialized() instead because it achieves the same effect without using OF specific flags. This allows more generic code to be written in driver core. Signed-off-by: Saravana Kannan Reviewed-by: Geert Uytterhoeven Acked-by: Geert Uytterhoeven Tested-by: Douglas Anderson Tested-by: Geert Uytterhoeven Tested-by: Luca Weiss # qcom/sm7225-fairphone-fp4 Link: https://lore.kernel.org/r/20230207014207.1678715-4-saravanak@google.com Signed-off-by: Greg Kroah-Hartman

soc: renesas: Prefer memcpy() over strcpy()

2021-08-12T10:36:57+00:00

strcpy() performs no bounds checking on the destination buffer. This could result in linear overflows beyond the end of the buffer, leading to all kinds of misbehaviors. So, use memcpy() as a safe replacement. This is a previous step in the path to remove the strcpy() function entirely from the kernel. Signed-off-by: Len Baker Link: https://lore.kernel.org/r/20210808125012.4715-3-len.baker@gmx.com Signed-off-by: Geert Uytterhoeven

soc: renesas: rcar-sysc: Mark device node OF_POPULATED after init

2021-01-29T08:10:25+00:00

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 Reviewed-by: Saravana Kannan Link: https://lore.kernel.org/r/20210128082847.2205950-1-geert+renesas@glider.be

soc: renesas: rcar-sysc: Use readl_poll_timeout_atomic()

2021-01-26T09:40:14+00:00

Replace the open-coded polling loops by calls to the readl_poll_timeout_atomic() helper macro. Signed-off-by: Geert Uytterhoeven Reviewed-by: Niklas Söderlund Link: https://lore.kernel.org/r/20210125142606.1050130-1-geert+renesas@glider.be

soc: renesas: rcar-sysc: Add r8a774e1 support

2020-07-13T08:34:41+00:00

Add support for RZ/G2H (R8A774E1) SoC power areas to the R-Car SYSC driver. Signed-off-by: Marian-Cristian Rotariu Signed-off-by: Lad Prabhakar Link: https://lore.kernel.org/r/1594138692-16816-6-git-send-email-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Geert Uytterhoeven

soc: renesas: rcar-sysc: Add R8A7742 support

2020-04-30T08:01:39+00:00

Add support for RZ/G1H (R8A7742) SoC power areas to the R-Car SYSC driver. Signed-off-by: Lad Prabhakar Reviewed-by: Marian-Cristian Rotariu Link: https://lore.kernel.org/r/1587678050-23468-4-git-send-email-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Geert Uytterhoeven

soc: renesas: rcar-sysc: Add R8A77961 support

2019-11-01T13:25:53+00:00

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 . Signed-off-by: Geert Uytterhoeven Reviewed-by: Yoshihiro Shimoda Tested-by: Yoshihiro Shimoda Link: https://lore.kernel.org/r/20191023123342.13100-7-geert+renesas@glider.be

soc: renesas: Rename SYSC_R8A7796 to SYSC_R8A77960

2019-11-01T13:25:53+00:00

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 Reviewed-by: Yoshihiro Shimoda Link: https://lore.kernel.org/r/20191023123342.13100-2-geert+renesas@glider.be

soc: renesas: rcar-sysc: Add r8a774b1 support

2019-10-01T08:29:40+00:00

Add support for RZ/G2N (R8A774B1) SoC power areas to the R-Car SYSC driver. Signed-off-by: Biju Das Link: https://lore.kernel.org/r/1569223780-54304-1-git-send-email-biju.das@bp.renesas.com Signed-off-by: Geert Uytterhoeven