kernel/linux.git/drivers/memory/samsung, branch v5.10.7

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

2020-10-24T17:39:22+00:00

Pull ARM SoC-related driver updates from Olof Johansson: "Various driver updates for platforms. A bulk of this is smaller fixes or cleanups, but some of the new material this time around is: - Support for Nvidia Tegra234 SoC - Ring accelerator support for TI AM65x - PRUSS driver for TI platforms - Renesas support for R-Car V3U SoC - Reset support for Cortex-M4 processor on i.MX8MQ There are also new socinfo entries for a handful of different SoCs and platforms" * tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (131 commits) drm/mediatek: reduce clear event soc: mediatek: cmdq: add clear option in cmdq_pkt_wfe api soc: mediatek: cmdq: add jump function soc: mediatek: cmdq: add write_s_mask value function soc: mediatek: cmdq: add write_s value function soc: mediatek: cmdq: add read_s function soc: mediatek: cmdq: add write_s_mask function soc: mediatek: cmdq: add write_s function soc: mediatek: cmdq: add address shift in jump soc: mediatek: mtk-infracfg: Fix kerneldoc soc: amlogic: pm-domains: use always-on flag reset: sti: reset-syscfg: fix struct description warnings reset: imx7: add the cm4 reset for i.MX8MQ dt-bindings: reset: imx8mq: add m4 reset reset: Fix and extend kerneldoc reset: reset-zynqmp: Added support for Versal platform dt-bindings: reset: Updated binding for Versal reset driver reset: imx7: Support module build soc: fsl: qe: Remove unnessesary check in ucc_set_tdm_rxtx_clk soc: fsl: qman: convert to use be32_add_cpu() ...

PM / devfreq: event: Change prototype of devfreq_event_get_edev_by_phandle function

2020-09-29T08:50:10+00:00

Previously, devfreq core support 'devfreq-events' property in order to get the devfreq-event device by phandle. But, 'devfreq-events' property name is not proper on devicetree binding because this name doesn't mean the any h/w attribute. The devfreq-event core hand over the rights to decide the property name for getting the devfreq-event device on devicetree. Each devfreq-event driver will decide the property name on devicetree binding and then pass the their own property name to devfreq_event_get_edev_by_phandle function. And change the prototype of devfreq_event_get_edev_count function because of used deprecated 'devfreq-events' property. Acked-by: Krzysztof Kozlowski Signed-off-by: Chanwoo Choi

memory: samsung: exynos5422-dmc: add missing and fix kerneldoc

2020-09-01T18:37:48+00:00

Add missing kerneldoc to struct exynos5_dmc and correct the existing kerneldoc in other places to fix W=1 warnings like: drivers/memory/samsung/exynos5422-dmc.c:107: warning: Function parameter or member 'freq_hz' not described in 'dmc_opp_table' drivers/memory/samsung/exynos5422-dmc.c:154: warning: Function parameter or member 'dev' not described in 'exynos5_dmc' drivers/memory/samsung/exynos5422-dmc.c:357: warning: Excess function parameter 'param' description in 'exynos5_set_bypass_dram_timings' drivers/memory/samsung/exynos5422-dmc.c:630: warning: Function parameter or member 'flags' not described in 'exynos5_dmc_get_volt_freq' drivers/memory/samsung/exynos5422-dmc.c:962: warning: cannot understand function prototype: 'struct devfreq_dev_profile exynos5_dmc_df_profile = ' drivers/memory/samsung/exynos5422-dmc.c:1011: warning: Function parameter or member 'reg_timing_row' not described in 'create_timings_aligned' drivers/memory/samsung/exynos5422-dmc.c:1011: warning: Excess function parameter 'idx' description in 'create_timings_aligned' drivers/memory/samsung/exynos5422-dmc.c:1345: warning: Excess function parameter 'set' description in 'exynos5_dmc_set_pause_on_switching' Signed-off-by: Krzysztof Kozlowski Acked-by: Lukasz Luba Link: https://lore.kernel.org/r/20200822163218.21857-3-krzk@kernel.org

memory: samsung: exynos5422-dmc: remove unused exynos5_dmc members

2020-09-01T18:36:25+00:00

The struct exynos5_dmc members bypass_rate, mx_mspll_ccore_phy, mout_mx_mspll_ccore_phy and opp_bypass are not actually used. Apparently there was a plan to store the OPP for the bypass mode in opp_bypass member, but driver fails to do it and instead always sets target voltage during bypass mode. Signed-off-by: Krzysztof Kozlowski Link: https://lore.kernel.org/r/20200822163218.21857-2-krzk@kernel.org

memory: samsung: exynos5422-dmc: rename timing register fields variables

2020-09-01T18:35:27+00:00

The driver has file-scope arrays defining fields of timing registers (e.g. struct timing_reg timing_row) and actual values for these registers per each OPP in state container (struct exynos5_dmc.timing_row). The meanings of these are different so use different names to avoid confusion. Signed-off-by: Krzysztof Kozlowski Acked-by: Lukasz Luba Link: https://lore.kernel.org/r/20200822163218.21857-1-krzk@kernel.org

memory: samsung: exynos5422-dmc: Document mutex scope

2020-08-17T12:37:59+00:00

Document scope of the mutex used by driver. Signed-off-by: Krzysztof Kozlowski Reviewed-by: Lukasz Luba Link: https://lore.kernel.org/r/20200724180857.22119-1-krzk@kernel.org

memory: samsung: exynos5422-dmc: Additional locking for 'curr_rate'

2020-08-17T11:54:14+00:00

The 'curr_rate' is protected by local 'dmc->lock' in various places, but not in a function exynos5_dmc_get_status(). The lock protects frequency (and voltage) change process and the corresponding value stored in 'curr_rate'. Add the locking mechanism to protect the 'curr_rate' reading also in the exynos5_dmc_get_status(). Suggested-by: Krzysztof Kozlowski Signed-off-by: Lukasz Luba Link: https://lore.kernel.org/r/20200811101727.3976-1-lukasz.luba@arm.com Signed-off-by: Krzysztof Kozlowski

Merge tag 'pm-5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

2020-08-04T03:28:08+00:00

Pull power management updates from Rafael Wysocki: "The most significant change here is the extension of the Energy Model to cover non-CPU devices (as well as CPUs) from Lukasz Luba. There is also some new hardware support (Ice Lake server idle states table for intel_idle, Sapphire Rapids and Power Limit 4 support in the RAPL driver), some new functionality in the existing drivers (eg. a new switch to disable/enable CPU energy-efficiency optimizations in intel_pstate, delayed timers in devfreq), some assorted fixes (cpufreq core, intel_pstate, intel_idle) and cleanups (eg. cpuidle-psci, devfreq), including the elimination of W=1 build warnings from cpufreq done by Lee Jones. Specifics: - Make the Energy Model cover non-CPU devices (Lukasz Luba). - Add Ice Lake server idle states table to the intel_idle driver and eliminate a redundant static variable from it (Chen Yu, Rafael Wysocki). - Eliminate all W=1 build warnings from cpufreq (Lee Jones). - Add support for Sapphire Rapids and for Power Limit 4 to the Intel RAPL power capping driver (Sumeet Pawnikar, Zhang Rui). - Fix function name in kerneldoc comments in the idle_inject power capping driver (Yangtao Li). - Fix locking issues with cpufreq governors and drop a redundant "weak" function definition from cpufreq (Viresh Kumar). - Rearrange cpufreq to register non-modular governors at the core_initcall level and allow the default cpufreq governor to be specified in the kernel command line (Quentin Perret). - Extend, fix and clean up the intel_pstate driver (Srinivas Pandruvada, Rafael Wysocki): * Add a new sysfs attribute for disabling/enabling CPU energy-efficiency optimizations in the processor. * Make the driver avoid enabling HWP if EPP is not supported. * Allow the driver to handle numeric EPP values in the sysfs interface and fix the setting of EPP via sysfs in the active mode. * Eliminate a static checker warning and clean up a kerneldoc comment. - Clean up some variable declarations in the powernv cpufreq driver (Wei Yongjun). - Fix up the ->enter_s2idle callback definition to cover the case when it points to the same function as ->idle correctly (Neal Liu). - Rearrange and clean up the PSCI cpuidle driver (Ulf Hansson). - Make the PM core emit "changed" uevent when adding/removing the "wakeup" sysfs attribute of devices (Abhishek Pandit-Subedi). - Add a helper macro for declaring PM callbacks and use it in the MMC jz4740 driver (Paul Cercueil). - Fix white space in some places in the hibernate code and make the system-wide PM code use "const char *" where appropriate (Xiang Chen, Alexey Dobriyan). - Add one more "unsafe" helper macro to the freezer to cover the NFS use case (He Zhe). - Change the language in the generic PM domains framework to use parent/child terminology and clean up a typo and some comment fromatting in that code (Kees Cook, Geert Uytterhoeven). - Update the operating performance points OPP framework (Lukasz Luba, Andrew-sh.Cheng, Valdis Kletnieks): * Refactor dev_pm_opp_of_register_em() and update related drivers. * Add a missing function export. * Allow disabled OPPs in dev_pm_opp_get_freq(). - Update devfreq core and drivers (Chanwoo Choi, Lukasz Luba, Enric Balletbo i Serra, Dmitry Osipenko, Kieran Bingham, Marc Zyngier): * Add support for delayed timers to the devfreq core and make the Samsung exynos5422-dmc driver use it. * Unify sysfs interface to use "df-" as a prefix in instance names consistently. * Fix devfreq_summary debugfs node indentation. * Add the rockchip,pmu phandle to the rk3399_dmc driver DT bindings. * List Dmitry Osipenko as the Tegra devfreq driver maintainer. * Fix typos in the core devfreq code. - Update the pm-graph utility to version 5.7 including a number of fixes related to suspend-to-idle (Todd Brandt). - Fix coccicheck errors and warnings in the cpupower utility (Shuah Khan). - Replace HTTP links with HTTPs ones in multiple places (Alexander A. Klimov)" * tag 'pm-5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (71 commits) cpuidle: ACPI: fix 'return' with no value build warning cpufreq: intel_pstate: Fix EPP setting via sysfs in active mode cpufreq: intel_pstate: Rearrange the storing of new EPP values intel_idle: Customize IceLake server support PM / devfreq: Fix the wrong end with semicolon PM / devfreq: Fix indentaion of devfreq_summary debugfs node PM / devfreq: Clean up the devfreq instance name in sysfs attr memory: samsung: exynos5422-dmc: Add module param to control IRQ mode memory: samsung: exynos5422-dmc: Adjust polling interval and uptreshold memory: samsung: exynos5422-dmc: Use delayed timer as default PM / devfreq: Add support delayed timer for polling mode dt-bindings: devfreq: rk3399_dmc: Add rockchip,pmu phandle PM / devfreq: tegra: Add Dmitry as a maintainer PM / devfreq: event: Fix trivial spelling PM / devfreq: rk3399_dmc: Fix kernel oops when rockchip,pmu is absent cpuidle: change enter_s2idle() prototype cpuidle: psci: Prevent domain idlestates until consumers are ready cpuidle: psci: Convert PM domain to platform driver cpuidle: psci: Fix error path via converting to a platform driver cpuidle: psci: Fail cpuidle registration if set OSI mode failed ...

memory: samsung: exynos5422-dmc: Add module param to control IRQ mode

2020-07-30T08:22:57+00:00

The driver can operate in two modes relaying on devfreq monitoring mechanism which periodically checks the device status or it can use interrupts when they are provided by loaded Device Tree. The newly introduced module parameter can be used to choose between devfreq monitoring and internal interrupts without modifying the Device Tree. It also sets devfreq monitoring as default when the parameter is not set (also the case for default when the driver is not built as a module). Reported-by: Willy Wolff Reviewed-by: Krzysztof Kozlowski Signed-off-by: Lukasz Luba Signed-off-by: Chanwoo Choi

memory: samsung: exynos5422-dmc: Adjust polling interval and uptreshold

2020-07-30T08:22:57+00:00

In order to react faster and make better decisions under some workloads, benchmarking the memory subsystem behavior, adjust the polling interval and upthreshold value used by the simple_ondemand governor. Reported-by: Willy Wolff Reviewed-by: Chanwoo Choi Reviewed-by: Krzysztof Kozlowski Signed-off-by: Lukasz Luba Signed-off-by: Chanwoo Choi