kernel/drivers/soc/imx/gpc.c, branch linux-5.1.y

soc: imx: gpc: Increase GPC_CLK_MAX to 7

2018-12-10T00:51:12Z

The DISPLAY power domain on imx6sx has 7 clocks. Signed-off-by: Leonard Crestez Signed-off-by: Shawn Guo

soc: imx: gpc: Switch to SPDX identifier

2018-10-01T05:24:15Z

Adopt the SPDX license identifier headers to ease license compliance management. Signed-off-by: Fabio Estevam Signed-off-by: Shawn Guo

soc: imx: gpc: use GPC_PGC_DOMAIN_* indexes

2018-09-03T04:25:07Z

Use GPC_PGC_DOMAIN_* indexes consistent. Signed-off-by: Sven Schmitt Reviewed-by: Leonard Crestez Signed-off-by: Shawn Guo

soc: imx: gpc: fix PDN delay

2018-09-03T04:25:06Z

imx6_pm_domain_power_off() reads iso and iso2sw from GPC_PGC_PUPSCR_OFFS which stores the power up delays. So use GPC_PGC_PDNSCR_OFFS for the correct delays. Signed-off-by: Sven Schmitt Reviewed-by: Leonard Crestez Signed-off-by: Shawn Guo

Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

2018-08-23T20:52:46Z

Pull ARM SoC driver updates from Olof Johansson: "Some of the larger changes this merge window: - Removal of drivers for Exynos5440, a Samsung SoC that never saw widespread use. - Uniphier support for USB3 and SPI reset handling - Syste control and SRAM drivers and bindings for Allwinner platforms - Qualcomm AOSS (Always-on subsystem) reset controller drivers - Raspberry Pi hwmon driver for voltage - Mediatek pwrap (pmic) support for MT6797 SoC" * tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (52 commits) drivers/firmware: psci_checker: stash and use topology_core_cpumask for hotplug tests soc: fsl: cleanup Kconfig menu soc: fsl: dpio: Convert DPIO documentation to .rst staging: fsl-mc: Remove remaining files staging: fsl-mc: Move DPIO from staging to drivers/soc/fsl staging: fsl-dpaa2: eth: move generic FD defines to DPIO soc: fsl: qe: gpio: Add qe_gpio_set_multiple usb: host: exynos: Remove support for Exynos5440 clk: samsung: Remove support for Exynos5440 soc: sunxi: Add the A13, A23 and H3 system control compatibles reset: uniphier: add reset control support for SPI cpufreq: exynos: Remove support for Exynos5440 ata: ahci-platform: Remove support for Exynos5440 soc: imx6qp: Use GENPD_FLAG_ALWAYS_ON for PU errata soc: mediatek: pwrap: add mt6351 driver for mt6797 SoCs soc: mediatek: pwrap: add pwrap driver for mt6797 SoCs soc: mediatek: pwrap: fix cipher init setting error dt-bindings: pwrap: mediatek: add pwrap support for MT6797 reset: uniphier: add USB3 core reset control dt-bindings: reset: uniphier: add USB3 core reset support ...

Merge branches 'pm-core', 'pm-domains', 'pm-sleep', 'acpi-pm' and 'pm-cpuidle'

2018-08-14T07:48:10Z

Merge changes in the PM core, system-wide PM infrastructure, generic power domains (genpd) framework, ACPI PM infrastructure and cpuidle for 4.19. * pm-core: driver core: Add flag to autoremove device link on supplier unbind driver core: Rename flag AUTOREMOVE to AUTOREMOVE_CONSUMER * pm-domains: PM / Domains: Introduce dev_pm_domain_attach_by_name() PM / Domains: Introduce option to attach a device by name to genpd PM / Domains: dt: Add a power-domain-names property * pm-sleep: PM / reboot: Eliminate race between reboot and suspend PM / hibernate: Mark expected switch fall-through x86/power/hibernate_64: Remove VLA usage PM / hibernate: cast PAGE_SIZE to int when comparing with error code * acpi-pm: ACPI / PM: save NVS memory for ASUS 1025C laptop ACPI / PM: Default to s2idle in all machines supporting LP S0 * pm-cpuidle: ARM: cpuidle: silence error on driver registration failure

soc: imx: gpc: restrict register range for regmap access

2018-07-19T02:24:00Z

GPC registers are NOT continuous, some registers are reserved and accessing them from userspace will trigger external abort, add regmap register access table to avoid below abort: root@imx6slevk:~# cat /sys/kernel/debug/regmap/20dc000.gpc/registers [ 108.480477] Unhandled fault: imprecise external abort (0x1406) at 0xb6db5004 [ 108.487985] pgd = 42b54bfd [ 108.490741] [b6db5004] *pgd=ba1b7831 [ 108.494386] Internal error: : 1406 [#1] SMP ARM [ 108.498943] Modules linked in: [ 108.502043] CPU: 0 PID: 389 Comm: cat Not tainted 4.18.0-rc1-00074-gc9f1f60-dirty #482 [ 108.509982] Hardware name: Freescale i.MX6 SoloLite (Device Tree) [ 108.516123] PC is at regmap_mmio_read32le+0x20/0x24 [ 108.521031] LR is at regmap_mmio_read+0x40/0x60 [ 108.525586] pc : [] lr : [] psr: 20060093 [ 108.531875] sp : eccf1d98 ip : eccf1da8 fp : eccf1da4 [ 108.537122] r10: ec2d3800 r9 : eccf1f60 r8 : ecfc0000 [ 108.542370] r7 : eccf1e2c r6 : eccf1e2c r5 : 00000028 r4 : ec338e00 [ 108.548920] r3 : 00000000 r2 : eccf1e2c r1 : f0980028 r0 : 00000000 [ 108.555474] Flags: nzCv IRQs off FIQs on Mode SVC_32 ISA ARM Segment none [ 108.562720] Control: 10c5387d Table: acf4004a DAC: 00000051 [ 108.568491] Process cat (pid: 389, stack limit = 0xd4318a65) [ 108.574174] Stack: (0xeccf1d98 to 0xeccf2000) Fixes: 721cabf6c660 ("soc: imx: move PGC handling to a new GPC driver") Signed-off-by: Anson Huang Reviewed-by: Fabio Estevam Signed-off-by: Shawn Guo

soc: imx6qp: Use GENPD_FLAG_ALWAYS_ON for PU errata

2018-07-17T06:12:14Z

This is functionally identical but simpler and slightly faster. The PU domain is turned on at boot time and never turned off. In the current implementation the pm core will repeatedly call power_off when the domain is unused and get -EBUSY back. If the domain is marked as "always on" instead the pm core won't even attempt to turn it off. In theory on 6qp it is safe to turn PU off in suspend, however that is best accomplished with a new core flag. Signed-off-by: Leonard Crestez Reviewed-by: Lucas Stach Reviewed-by: Ulf Hansson Signed-off-by: Shawn Guo

soc: imx: gpc: Disable 6sl display power gating for ERR006287

2018-07-11T13:18:24Z

The imx6sl chip errata document describes ERR006287 like this: > Upon resuming from power gating, the modules in the display power domain (eLCDIF, EPDC, PXP and SPDC) might fail to perform register reads correctly. > When the modules listed above are used, do not use power gating on the display power domain. Link: https://www.nxp.com/docs/en/errata/IMX6SLCE.pdf#page=62 Handle this in the safest possible way by keeping the DISP domain always-on. Signed-off-by: Leonard Crestez Reviewed-by: Lucas Stach Reviewed-by: Ulf Hansson Signed-off-by: Shawn Guo

driver core: Rename flag AUTOREMOVE to AUTOREMOVE_CONSUMER

2018-07-09T10:14:31Z

Now that we want to add another flag to autoremove the device link on supplier unbind, it's fair to rename the existing flag from DL_FLAG_AUTOREMOVE to DL_FLAG_AUTOREMOVE_CONSUMER so that we can add similar flag for supplier later. And, while we are touching device.h, fix a doc build warning. Signed-off-by: Vivek Gautam Reviewed-by: Ulf Hansson Signed-off-by: Rafael J. Wysocki