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2021-02-11Merge tag 'memory-controller-drv-5.12-2' of ↵Arnd Bergmann
git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux-mem-ctrl into arm/drivers Memory controller drivers for v5.12, part two Two minor cleanups and one fix for compile testing (when !CONFIG_OF). * tag 'memory-controller-drv-5.12-2' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux-mem-ctrl: memory: tegra186-emc: Replace DEFINE_SIMPLE_ATTRIBUTE with DEFINE_DEBUGFS_ATTRIBUTE memory: samsung: exynos5422-dmc: Correct function names in kerneldoc memory: ti-emif-pm: Drop of_match_ptr from of_device_id table Link: https://lore.kernel.org/r/20210211081829.7317-1-krzk@kernel.org Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2021-02-08memory: tegra186-emc: Replace DEFINE_SIMPLE_ATTRIBUTE with ↵Jiapeng Chong
DEFINE_DEBUGFS_ATTRIBUTE Fix the following coccicheck warning: drivers/memory/tegra/tegra186-emc.c:158:0-23: WARNING: tegra186_emc_debug_max_rate_fops should be defined with DEFINE_DEBUGFS_ATTRIBUTE. Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com> Link: https://lore.kernel.org/r/1612684970-125948-1-git-send-email-jiapeng.chong@linux.alibaba.com Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
2021-02-08memory: samsung: exynos5422-dmc: Correct function names in kerneldocKrzysztof Kozlowski
Correct kerneldoc to fix W=1 warnings: drivers/memory/samsung/exynos5422-dmc.c:290: warning: expecting prototype for find_target_freq_id(). Prototype was for find_target_freq_idx() instead drivers/memory/samsung/exynos5422-dmc.c:1015: warning: expecting prototype for exynos5_dmc_align_initial_frequency(). Prototype was for exynos5_dmc_align_init_freq() instead Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Reviewed-by: Lukasz Luba <lukasz.luba@arm.com> Link: https://lore.kernel.org/r/20210206111715.20774-1-krzk@kernel.org
2021-02-08memory: ti-emif-pm: Drop of_match_ptr from of_device_id tableKrzysztof Kozlowski
The driver can match only via the DT table so the table should be always used and the of_match_ptr does not have any sense (this also allows ACPI matching via PRP0001, even though it might be not relevant here). This fixes compile warning (!CONFIG_OF with clang): drivers/memory/ti-emif-pm.c:238:34: warning: unused variable 'ti_emif_of_match' [-Wunused-const-variable] Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Reviewed-by: Nathan Chancellor <nathan@kernel.org> Link: https://lore.kernel.org/r/20210206111343.19273-1-krzk@kernel.org
2021-02-02Merge tag 'memory-controller-drv-tegra-5.12' of ↵Arnd Bergmann
git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux-mem-ctrl into arm/drivers Memory controller drivers for v5.12 - Tegra SoC 1. Make the tegra124-emc driver modular. 2. Add interconnect support to Tegra124 memory controller drivers. 3. Minor fixes. * tag 'memory-controller-drv-tegra-5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux-mem-ctrl: memory: tegra: Remove calls to dev_pm_opp_set_clkname() memory: tegra: Check whether reset is already asserted memory: tegra124: Support interconnect framework memory: tegra124-emc: Continue probing if timings are missing in device-tree memory: tegra124-emc: Make driver modular Link: https://lore.kernel.org/r/20210131180109.11510-2-krzk@kernel.org Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2021-01-29memory: tegra: Remove calls to dev_pm_opp_set_clkname()Viresh Kumar
There is no point calling dev_pm_opp_set_clkname() with the "name" parameter set to NULL, this is already done by the OPP core at setup time and should work as it is. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Reviewed-by: Dmitry Osipenko <digetx@gmail.com> Tested-by: Dmitry Osipenko <digetx@gmail.com> Link: https://lore.kernel.org/r/0f22cc1791d8b88c50a9790c2dc19455b34ec7b0.1611742564.git.viresh.kumar@linaro.org Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
2021-01-26memory: mtk-smi: Allow building as moduleYong Wu
Add support for building the SMI driver as module. Switch MTK_SMI to tristate, and add module_exit/module_license. Signed-off-by: Yong Wu <yong.wu@mediatek.com> Link: https://lore.kernel.org/r/20210126060055.11050-1-yong.wu@mediatek.com Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
2021-01-25memory: ti-aemif: Drop child node when jumping out loopPan Bian
Call of_node_put() to decrement the reference count of the child node child_np when jumping out of the loop body of for_each_available_child_of_node(), which is a macro that increments and decrements the reference count of child node. If the loop is broken, the reference of the child node should be dropped manually. Fixes: 5a7c81547c1d ("memory: ti-aemif: introduce AEMIF driver") Signed-off-by: Pan Bian <bianpan2016@163.com> Link: https://lore.kernel.org/r/20210121090359.61763-1-bianpan2016@163.com Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
2021-01-23memory: tegra: Check whether reset is already assertedDmitry Osipenko
Check whether memory client reset is already asserted in order to prevent DMA-flush error on trying to re-assert an already asserted reset. This becomes a problem once PMC GENPD is enabled to use memory resets since GENPD will get a error and fail to toggle power domain. PMC GENPDs can't be toggled safely without holding memory reset on Tegra and we're about to fix this. Tested-by: Peter Geis <pgwipeout@gmail.com> # Ouya T30 Tested-by: Nicolas Chauvet <kwizart@gmail.com> # PAZ00 T20 Tested-by: Matt Merhar <mattmerhar@protonmail.com> # Ouya T30 Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Link: https://lore.kernel.org/r/20210119235210.13006-1-digetx@gmail.com Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
2021-01-22memory: mtk-smi: Use platform_register_driversYong Wu
In this file, we have 2 drivers, smi-common and smi-larb. Use platform_register_drivers. Signed-off-by: Yong Wu <yong.wu@mediatek.com> Link: https://lore.kernel.org/r/20210121062429.26504-2-yong.wu@mediatek.com Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
2021-01-05memory: renesas-rpc-if: Add RZ/G2 to Kconfig descriptionAdam Ford
The Renesas RPC-IF is present on the RZ/G2 Series. Add that to the description. Suggested-by: Biju Das <biju.das.jz@bp.renesas.com> Signed-off-by: Adam Ford <aford173@gmail.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20210102115412.3402059-2-aford173@gmail.com Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
2021-01-05memory: tegra124: Support interconnect frameworkDmitry Osipenko
Now Internal and External memory controllers are memory interconnection providers. This allows us to use interconnect API for tuning of memory configuration. EMC driver now supports OPPs and DVFS. Tested-by: Nicolas Chauvet <kwizart@gmail.com> Acked-by: Georgi Djakov <georgi.djakov@linaro.org> Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Link: https://lore.kernel.org/r/20201228154920.18846-4-digetx@gmail.com Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
2021-01-05memory: tegra124-emc: Continue probing if timings are missing in device-treeDmitry Osipenko
EMC driver will become mandatory after turning it into interconnect provider because interconnect users, like display controller driver, will fail to probe using newer device-trees that have interconnect properties. Thus make EMC driver to probe even if timings are missing in device-tree. Tested-by: Nicolas Chauvet <kwizart@gmail.com> Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Link: https://lore.kernel.org/r/20201228154920.18846-3-digetx@gmail.com Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
2021-01-05memory: tegra124-emc: Make driver modularDmitry Osipenko
Add modularization support to the Tegra124 EMC driver, which now can be compiled as a loadable kernel module. Note that EMC clock must be registered at clk-init time, otherwise PLLM will be disabled as unused clock at boot time if EMC driver is compiled as a module. Hence add a prepare/complete callbacks. similarly to what is done for the Tegra20/30 EMC drivers. Tested-by: Nicolas Chauvet <kwizart@gmail.com> Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Link: https://lore.kernel.org/r/20201228154920.18846-2-digetx@gmail.com Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
2021-01-03memory: emif: Use DEFINE_SPINLOCK() for spinlockZheng Yongjun
Spinlock can be initialized automatically with DEFINE_SPINLOCK() rather than explicitly calling spin_lock_init(). Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com> Link: https://lore.kernel.org/r/20201228135056.28511-1-zhengyongjun3@huawei.com Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
2021-01-03memory: mtk-smi: Fix PM usage counter unbalance in mtk_smi opsZhang Qilong
pm_runtime_get_sync will increment pm usage counter even it failed. Forgetting to putting operation will result in reference leak here. We fix it by replacing it with pm_runtime_resume_and_get to keep usage counter balanced. Fixes: 4f0a1a1ae3519 ("memory: mtk-smi: Invoke pm runtime_callback to enable clocks") Signed-off-by: Zhang Qilong <zhangqilong3@huawei.com> Link: https://lore.kernel.org/r/20201123102118.3866195-1-zhangqilong3@huawei.com Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
2020-12-09Merge tag 'memory-controller-drv-tegra-5.11-3' of ↵Arnd Bergmann
git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux-mem-ctrl into arm/drivers Memory controller drivers for v5.11 - Tegra SoC, part two Continuation of work on Tegra SoC memory controllers towards adding interconnect support and integration with devfreq. This brings few more patches including one which removes/fixes annoying warning if the DTS patches get applied. This is expected and only informs that new features of Tegra memory controller drivers will not be enabled however the warning itself could look worrying. * tag 'memory-controller-drv-tegra-5.11-3' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux-mem-ctrl: memory: tegra30: Support interconnect framework memory: tegra20: Support hardware versioning and clean up OPP table initialization dt-bindings: memory: tegra20-emc: Document opp-supported-hw property Link: https://lore.kernel.org/r/20201207075758.5501-2-krzk@kernel.org Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2020-12-09Merge tag 'memory-controller-drv-5.11-2' of ↵Arnd Bergmann
git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux-mem-ctrl into arm/drivers Memory controller drivers for v5.11, part two 1. Several fixes for Renesas RPC-IF driver. 2. Correct compile testing of TI EMIF SRAM driver. 3. Fix potential NULL pointer in JZ4780 NEMC driver. * tag 'memory-controller-drv-5.11-2' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux-mem-ctrl: memory: jz4780_nemc: Fix potential NULL dereference in jz4780_nemc_probe() memory: ti-emif-sram: only build for ARMv7 memory: renesas-rpc-if: Make rpcif_enable/disable_rpm() as static inline memory: renesas-rpc-if: Fix a node reference leak in rpcif_probe() memory: renesas-rpc-if: Fix unbalanced pm_runtime_enable in rpcif_{enable,disable}_rpm memory: renesas-rpc-if: Return correct value to the caller of rpcif_manual_xfer() Link: https://lore.kernel.org/r/20201207075758.5501-1-krzk@kernel.org Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2020-12-05memory: jz4780_nemc: Fix potential NULL dereference in jz4780_nemc_probe()Zhang Changzhong
platform_get_resource() may fail and return NULL, so we should better check it's return value to avoid a NULL pointer dereference a bit later in the code. This is detected by Coccinelle semantic patch. Fixes: 911a88829725 ("memory: jz4780-nemc: driver for the NEMC on JZ4780 SoCs") Signed-off-by: Zhang Changzhong <zhangchangzhong@huawei.com> Acked-by: Paul Cercueil <paul@crapouillou.net> Link: https://lore.kernel.org/r/1607070717-32880-1-git-send-email-zhangchangzhong@huawei.com Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
2020-12-05memory: ti-emif-sram: only build for ARMv7Arnd Bergmann
The driver can be compile-tested on all ARM machines, but causes a failure when built for ARMv7-M: arm-linux-gnueabi-ld: error: drivers/memory/ti-emif-sram-pm.o: conflicting architecture profiles A/M Limit the target machines to configurations that have ARMv7 enabled. Fixes: ea0c0ad6b6eb ("memory: Enable compile testing for most of the drivers") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Link: https://lore.kernel.org/r/20201203230832.1481767-1-arnd@kernel.org Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
2020-12-05memory: tegra30: Support interconnect frameworkDmitry Osipenko
Now Internal and External memory controllers are memory interconnection providers. This allows us to use interconnect API for tuning of memory configuration. EMC driver now supports OPPs and DVFS. MC driver now supports tuning of memory arbitration latency, which needs to be done for ISO memory clients, like a Display client for example. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Tested-by: Peter Geis <pgwipeout@gmail.com> Acked-by: Georgi Djakov <georgi.djakov@linaro.org> Acked-by: Thierry Reding <treding@nvidia.com> Link: https://lore.kernel.org/r/20201203192439.16177-4-digetx@gmail.com Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
2020-12-05memory: tegra20: Support hardware versioning and clean up OPP table ↵Dmitry Osipenko
initialization Support hardware versioning, which is now required for Tegra20 EMC OPP. Clean up OPP table initialization by using a error code returned by OPP API for judging about the OPP table presence in a device-tree and remove OPP regulator initialization because we're now going to use power domain instead of a raw regulator. This puts Tegra20 EMC OPP preparation on par with the Tegra30/124 EMC drivers. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-by: Thierry Reding <treding@nvidia.com> Link: https://lore.kernel.org/r/20201203192439.16177-3-digetx@gmail.com Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
2020-11-28memory: renesas-rpc-if: Make rpcif_enable/disable_rpm() as static inlineLad Prabhakar
Define rpcif_enable_rpm() and rpcif_disable_rpm() as static inline in the header instead of exporting them. Suggested-by: Pavel Machek <pavel@denx.de> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Reviewed-by: Pavel Machek (CIP) <pavel@denx.de> Link: https://lore.kernel.org/r/20201126191146.8753-5-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
2020-11-28memory: renesas-rpc-if: Fix a node reference leak in rpcif_probe()Lad Prabhakar
Release the node reference by calling of_node_put(flash) in the probe. Fixes: ca7d8b980b67f ("memory: add Renesas RPC-IF driver") Reported-by: Pavel Machek <pavel@denx.de> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Reviewed-by: Sergei Shtylyov <sergei.shtylyov@gmail.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Pavel Machek (CIP) <pavel@denx.de> Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20201126191146.8753-4-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
2020-11-28memory: renesas-rpc-if: Fix unbalanced pm_runtime_enable in ↵Lad Prabhakar
rpcif_{enable,disable}_rpm rpcif_enable_rpm calls pm_runtime_enable, so rpcif_disable_rpm needs to call pm_runtime_disable and not pm_runtime_put_sync. Fixes: ca7d8b980b67f ("memory: add Renesas RPC-IF driver") Reported-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Reviewed-by: Sergei Shtylyov <sergei.shtylyov@gmail.com> Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20201126191146.8753-3-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
2020-11-28memory: renesas-rpc-if: Return correct value to the caller of ↵Lad Prabhakar
rpcif_manual_xfer() In the error path of rpcif_manual_xfer() the value of ret is overwritten by value returned by reset_control_reset() function and thus returning incorrect value to the caller. This patch makes sure the correct value is returned to the caller of rpcif_manual_xfer() by dropping the overwrite of ret in error path. Also now we ignore the value returned by reset_control_reset() in the error path and instead print a error message when it fails. Fixes: ca7d8b980b67f ("memory: add Renesas RPC-IF driver") Reported-by: Pavel Machek <pavel@denx.de> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com> Reviewed-by: Sergei Shtylyov <sergei.shtylyov@gmail.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Pavel Machek (CIP) <pavel@denx.de> Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20201126191146.8753-2-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
2020-11-26Merge tag 'memory-controller-drv-tegra-5.11-2' of ↵Arnd Bergmann
git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux-mem-ctrl into arm/drivers Memory controller drivers for v5.11 - Tegra SoC There is a bigger work from Dmitry Osipenko around Tegra SoC memory controller drivers, mostly towards adding interconnect support and integration with devfreq. This work touches all Tegra memory controller drivers and also few other SoC-related parts. It's not yet finished but the intermediate stage seems ready to merge. Beside that Tegra 210 memory controller got few fixes and received new swgroups (work of Nicolin Chen). * tag 'memory-controller-drv-tegra-5.11-2' of git://git.kernel.org/pub/scm/linux/kernel/git/krzk/linux-mem-ctrl: (38 commits) memory: tegra30-emc: Remove unnecessary of_node_put in tegra_emc_probe memory: tegra: Complete tegra210_swgroups memory: tegra30-emc: Continue probing if timings are missing in device-tree memory: tegra30-emc: Make driver modular memory: tegra30: Add FIFO sizes to memory clients memory: tegra20-emc: Add devfreq support memory: tegra20-emc: Remove IRQ number from error message memory: tegra20-emc: Factor out clk initialization memory: tegra20-emc: Use dev_pm_opp_set_clkname() memory: tegra: Correct stub of devm_tegra_memory_controller_get() memory: tegra20: Support interconnect framework memory: tegra20-emc: Continue probing if timings are missing in device-tree memory: tegra20-emc: Make driver modular memory: tegra-mc: Add interconnect framework memory: tegra: Add missing latency allowness entry for Page Table Cache memory: tegra: Remove superfluous error messages around platform_get_irq() memory: tegra: Use devm_platform_ioremap_resource() memory: tegra: Add and use devm_tegra_memory_controller_get() dt-bindings: host1x: Document new interconnect properties dt-bindings: tegra30-actmon: Document OPP and interconnect properties ... Link: https://lore.kernel.org/r/20201126191241.23302-1-krzk@kernel.org Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2020-11-26memory: tegra30-emc: Remove unnecessary of_node_put in tegra_emc_probeNathan Chancellor
Clang warns: drivers/memory/tegra/tegra30-emc.c:1275:15: warning: variable 'np' is uninitialized when used here [-Wuninitialized] of_node_put(np); ^~ drivers/memory/tegra/tegra30-emc.c:1269:24: note: initialize the variable 'np' to silence this warning There does not need to be an of_node_put call in this error handling block after the shuffling of the np assignment. Remove it so there is no use of uninitialized memory. Fixes: 5e00fd90183a ("memory: tegra30-emc: Continue probing if timings are missing in device-tree") Signed-off-by: Nathan Chancellor <natechancellor@gmail.com> Reviewed-by: Dmitry Osipenko <digetx@gmail.com> Link: https://lore.kernel.org/r/20201119195244.1517236-1-natechancellor@gmail.com Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
2020-11-26memory: tegra: Complete tegra210_swgroupsNicolin Chen
According to Tegra X1 TRM, there are missing swgroups in the tegra210_swgroups list. So this patch adds them to the list. Note that the TEGRA_SWGROUP_GPU (in list) should be actually TEGRA_SWGROUP_GPUB (in TRM), yet TEGRA_SWGROUP_GPU (in TRM) is not being used -- only TEGRA_SWGROUP_GPUB (in TRM) is. So this patch does not add TEGRA_SWGROUP_GPU (in TRM) and keeps TEGRA_SWGROUP_GPU (in list) as it is. Signed-off-by: Nicolin Chen <nicoleotsuka@gmail.com> Acked-by: Thierry Reding <treding@nvidia.com> Link: https://lore.kernel.org/r/20201008003746.25659-6-nicoleotsuka@gmail.com Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
2020-11-26memory: tegra30-emc: Continue probing if timings are missing in device-treeDmitry Osipenko
EMC driver will become mandatory after turning it into interconnect provider because interconnect users, like display controller driver, will fail to probe using newer device-trees that have interconnect properties. Thus make EMC driver to probe even if timings are missing in device-tree. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Link: https://lore.kernel.org/r/20201111011456.7875-9-digetx@gmail.com Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
2020-11-26memory: tegra30-emc: Make driver modularDmitry Osipenko
Add modularization support to the Tegra30 EMC driver, which now can be compiled as a loadable kernel module. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Link: https://lore.kernel.org/r/20201111011456.7875-8-digetx@gmail.com Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
2020-11-26memory: tegra30: Add FIFO sizes to memory clientsDmitry Osipenko
The latency allowness is calculated based on buffering capabilities of memory clients. Add FIFO sizes to the Tegra30 memory clients. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Link: https://lore.kernel.org/r/20201111011456.7875-7-digetx@gmail.com Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
2020-11-26memory: tegra20-emc: Add devfreq supportDmitry Osipenko
Add devfreq support to the Tegra20 EMC driver. Memory utilization statistics will be periodically polled from the memory controller and appropriate minimum clock rate will be selected by the devfreq governor. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com> Link: https://lore.kernel.org/r/20201111011456.7875-5-digetx@gmail.com Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
2020-11-26memory: tegra20-emc: Remove IRQ number from error messageDmitry Osipenko
Remove IRQ number from error message since it doesn't add any useful information, especially because this number is virtual. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Link: https://lore.kernel.org/r/20201111011456.7875-6-digetx@gmail.com Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
2020-11-26memory: tegra20-emc: Factor out clk initializationDmitry Osipenko
Factor out clk initialization and make it resource-managed. This makes easier to follow code and will help to make further changes cleaner. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Link: https://lore.kernel.org/r/20201111011456.7875-4-digetx@gmail.com Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
2020-11-26memory: tegra20-emc: Use dev_pm_opp_set_clkname()Dmitry Osipenko
The dev_pm_opp_get_opp_table() shouldn't be used by drivers, use dev_pm_opp_set_clkname() instead. Suggested-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Link: https://lore.kernel.org/r/20201111011456.7875-3-digetx@gmail.com Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
2020-11-26memory: tegra20: Support interconnect frameworkDmitry Osipenko
Now Internal and External Memory Controllers are memory interconnection providers. This allows us to use interconnect API for tuning of memory configuration. EMC driver now supports OPPs and DVFS. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Link: https://lore.kernel.org/r/20201104164923.21238-36-digetx@gmail.com Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
2020-11-26memory: tegra20-emc: Continue probing if timings are missing in device-treeDmitry Osipenko
EMC driver will become mandatory after turning it into interconnect provider because interconnect users, like display controller driver, will fail to probe using newer device-trees that have interconnect properties. Thus make EMC driver to probe even if timings are missing in device-tree. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Link: https://lore.kernel.org/r/20201104164923.21238-35-digetx@gmail.com Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
2020-11-26memory: tegra20-emc: Make driver modularDmitry Osipenko
Add modularization support to the Tegra20 EMC driver, which now can be compiled as a loadable kernel module. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-by: Thierry Reding <treding@nvidia.com> Link: https://lore.kernel.org/r/20201104164923.21238-34-digetx@gmail.com Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
2020-11-26memory: tegra-mc: Add interconnect frameworkDmitry Osipenko
Add common SoC-agnostic ICC framework which turns Tegra Memory Controller into a memory interconnection provider. This allows us to use interconnect API for tuning of memory configurations. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Tested-by: Peter Geis <pgwipeout@gmail.com> Tested-by: Nicolas Chauvet <kwizart@gmail.com> Link: https://lore.kernel.org/r/20201104164923.21238-33-digetx@gmail.com Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
2020-11-26memory: tegra: Add missing latency allowness entry for Page Table CacheDmitry Osipenko
Add missing PTC memory client latency allowness entry to the Tegra MC drivers. This prevents erroneous clearing of MC_INTSTATUS 0x0 register during of the LA programming in tegra_mc_setup_latency_allowance() due to the missing entry. Note that this patch doesn't fix any known problems. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Link: https://lore.kernel.org/r/20201104164923.21238-32-digetx@gmail.com Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
2020-11-26memory: tegra: Remove superfluous error messages around platform_get_irq()Dmitry Osipenko
The platform_get_irq() prints error message telling that interrupt is missing, hence there is no need to duplicated that message in the drivers. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Link: https://lore.kernel.org/r/20201104164923.21238-31-digetx@gmail.com Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
2020-11-26memory: tegra: Use devm_platform_ioremap_resource()Dmitry Osipenko
Use devm_platform_ioremap_resource() helper which makes code a bit cleaner. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-by: Thierry Reding <treding@nvidia.com> Link: https://lore.kernel.org/r/20201104164923.21238-30-digetx@gmail.com Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
2020-11-26memory: tegra: Add and use devm_tegra_memory_controller_get()Dmitry Osipenko
Multiple Tegra drivers need to retrieve Memory Controller and there is duplication of the retrieval code among the drivers. Add new devm_tegra_memory_controller_get() helper to remove the code's duplication and to fix put_device() which was missed in the duplicated code. Make EMC drivers to use the new helper. Signed-off-by: Dmitry Osipenko <digetx@gmail.com> Acked-by: Thierry Reding <treding@nvidia.com> Link: https://lore.kernel.org/r/20201104164923.21238-29-digetx@gmail.com Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
2020-11-18memory: pl353-smc: fix compile test on !ARM_AMBAKrzysztof Kozlowski
The pl353-smc driver uses module_amba_driver so it has a build dependency on CONFIG_ARM_AMBA: /usr/bin/arm-linux-gnueabi-ld: drivers/memory/pl353-smc.o: in function `pl353_smc_driver_init': pl353-smc.c:(.init.text+0x10): undefined reference to `amba_driver_register' However it still can be compile tested on platforms other than ARM, which in practice is limited to those selecting ARM_AMBA (so only ARM64). Fixes: ea0c0ad6b6eb ("memory: Enable compile testing for most of the drivers") Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Acked-by: Michal Simek <michal.simek@xilinx.com> Link: https://lore.kernel.org/r/20201029193357.389593-1-krzk@kernel.org
2020-11-05memory: mtk-smi: Add mt8192 supportYong Wu
Add mt8192 SMI support. Signed-off-by: Yong Wu <yong.wu@mediatek.com> Link: https://lore.kernel.org/r/20201103054200.21386-4-yong.wu@mediatek.com Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
2020-10-27memory: tegra: Sort tegra210_swgroups by reg addressNicolin Chen
Cleanup the list of swgroups (ordering by register address) to prepare for new ones. Signed-off-by: Nicolin Chen <nicoleotsuka@gmail.com> Acked-by: Thierry Reding <treding@nvidia.com> Link: https://lore.kernel.org/r/20201008003746.25659-4-nicoleotsuka@gmail.com Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
2020-10-27memory: tegra: Correct tegra210_mc_clients def valuesNicolin Chen
Some def values are mismatched with Tegra X1 TRM, probably because being copied from tegra124.c file. Signed-off-by: Nicolin Chen <nicoleotsuka@gmail.com> Acked-by: Thierry Reding <treding@nvidia.com> Link: https://lore.kernel.org/r/20201008003746.25659-3-nicoleotsuka@gmail.com Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
2020-10-27memory: tegra: Correct la.reg address of seswrNicolin Chen
According to Tegra X1 TRM, ALLOWANCE_SESWR is located in field [23:16] of register at address 0x3e0 with a reset value of 0x80 at register 0x3e0, while bit-1 of register 0xb98 is for enable bit of seswr. Signed-off-by: Nicolin Chen <nicoleotsuka@gmail.com> Acked-by: Thierry Reding <treding@nvidia.com> Link: https://lore.kernel.org/r/20201008003746.25659-2-nicoleotsuka@gmail.com Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
2020-10-26memory: jz4780_nemc: Fix an error pointer vs NULL check in probe()Dan Carpenter
The devm_ioremap() function returns NULL on error, it doesn't return error pointers. This bug could lead to an Oops during probe. Fixes: f046e4a3f0b9 ("memory: jz4780_nemc: Only request IO memory the driver will use") Cc: <stable@vger.kernel.org> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: Paul Cercueil <paul@crapouillou.net> Link: https://lore.kernel.org/r/20200803143607.GC346925@mwanda Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
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