From: Dmitry Osipenko <digetx@gmail.com> To: Thierry Reding <thierry.reding@gmail.com>, Jonathan Hunter <jonathanh@nvidia.com>, Georgi Djakov <georgi.djakov@linaro.org>, Rob Herring <robh+dt@kernel.org>, Michael Turquette <mturquette@baylibre.com>, Stephen Boyd <sboyd@kernel.org>, Peter De Schrijver <pdeschrijver@nvidia.com>, MyungJoo Ham <myungjoo.ham@samsung.com>, Kyungmin Park <kyungmin.park@samsung.com>, Chanwoo Choi <cw00.choi@samsung.com>, Mikko Perttunen <cyndis@kapsi.fi>, Viresh Kumar <vireshk@kernel.org>, Peter Geis <pgwipeout@gmail.com>, Nicolas Chauvet <kwizart@gmail.com>, Krzysztof Kozlowski <krzk@kernel.org> Cc: linux-tegra@vger.kernel.org, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org Subject: [PATCH v8 17/26] PM / devfreq: tegra30: Separate configurations per-SoC generation Date: Wed, 11 Nov 2020 04:14:47 +0300 [thread overview] Message-ID: <20201111011456.7875-18-digetx@gmail.com> (raw) In-Reply-To: <20201111011456.7875-1-digetx@gmail.com> Previously we were using count-weight of the T124 for T30 in order to get EMC clock rate that was reasonable for T30. In fact the count-weight should be x2 times smaller on T30, but then devfreq was producing a bit too low EMC clock rate for ISO memory clients, like display controller for example. Now both Tegra ACTMON and Tegra DRM display drivers support interconnect framework and display driver tells to ICC what a minimum memory bandwidth is needed, preventing FIFO underflows. Thus, now we can use a proper count-weight value for Tegra30 and MC_ALL device config needs a bit more aggressive boosting. Add a separate ACTMON driver configuration that is specific to Tegra30. Tested-by: Peter Geis <pgwipeout@gmail.com> Tested-by: Nicolas Chauvet <kwizart@gmail.com> Acked-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Dmitry Osipenko <digetx@gmail.com> --- drivers/devfreq/tegra30-devfreq.c | 68 ++++++++++++++++++++++++------- 1 file changed, 54 insertions(+), 14 deletions(-) diff --git a/drivers/devfreq/tegra30-devfreq.c b/drivers/devfreq/tegra30-devfreq.c index ed6d4469c8c7..36ba82c3898c 100644 --- a/drivers/devfreq/tegra30-devfreq.c +++ b/drivers/devfreq/tegra30-devfreq.c @@ -57,13 +57,6 @@ #define ACTMON_BELOW_WMARK_WINDOW 3 #define ACTMON_BOOST_FREQ_STEP 16000 -/* - * Activity counter is incremented every 256 memory transactions, and each - * transaction takes 4 EMC clocks for Tegra124; So the COUNT_WEIGHT is - * 4 * 256 = 1024. - */ -#define ACTMON_COUNT_WEIGHT 0x400 - /* * ACTMON_AVERAGE_WINDOW_LOG2: default value for @DEV_CTRL_K_VAL, which * translates to 2 ^ (K_VAL + 1). ex: 2 ^ (6 + 1) = 128 @@ -111,7 +104,7 @@ enum tegra_actmon_device { MCCPU, }; -static const struct tegra_devfreq_device_config actmon_device_configs[] = { +static const struct tegra_devfreq_device_config tegra124_device_configs[] = { { /* MCALL: All memory accesses (including from the CPUs) */ .offset = 0x1c0, @@ -133,6 +126,28 @@ static const struct tegra_devfreq_device_config actmon_device_configs[] = { }, }; +static const struct tegra_devfreq_device_config tegra30_device_configs[] = { + { + /* MCALL: All memory accesses (including from the CPUs) */ + .offset = 0x1c0, + .irq_mask = 1 << 26, + .boost_up_coeff = 200, + .boost_down_coeff = 50, + .boost_up_threshold = 20, + .boost_down_threshold = 10, + }, + { + /* MCCPU: memory accesses from the CPUs */ + .offset = 0x200, + .irq_mask = 1 << 25, + .boost_up_coeff = 800, + .boost_down_coeff = 40, + .boost_up_threshold = 27, + .boost_down_threshold = 10, + .avg_dependency_threshold = 16000, /* 16MHz in kHz units */ + }, +}; + /** * struct tegra_devfreq_device - state specific to an ACTMON device * @@ -155,6 +170,12 @@ struct tegra_devfreq_device { unsigned long target_freq; }; +struct tegra_devfreq_soc_data { + const struct tegra_devfreq_device_config *configs; + /* Weight value for count measurements */ + unsigned int count_weight; +}; + struct tegra_devfreq { struct devfreq *devfreq; struct opp_table *opp_table; @@ -171,11 +192,13 @@ struct tegra_devfreq { struct delayed_work cpufreq_update_work; struct notifier_block cpu_rate_change_nb; - struct tegra_devfreq_device devices[ARRAY_SIZE(actmon_device_configs)]; + struct tegra_devfreq_device devices[2]; unsigned int irq; bool started; + + const struct tegra_devfreq_soc_data *soc; }; struct tegra_actmon_emc_ratio { @@ -488,7 +511,7 @@ static void tegra_actmon_configure_device(struct tegra_devfreq *tegra, tegra_devfreq_update_avg_wmark(tegra, dev); tegra_devfreq_update_wmark(tegra, dev); - device_writel(dev, ACTMON_COUNT_WEIGHT, ACTMON_DEV_COUNT_WEIGHT); + device_writel(dev, tegra->soc->count_weight, ACTMON_DEV_COUNT_WEIGHT); device_writel(dev, ACTMON_INTR_STATUS_CLEAR, ACTMON_DEV_INTR_STATUS); val |= ACTMON_DEV_CTRL_ENB_PERIODIC; @@ -786,6 +809,8 @@ static int tegra_devfreq_probe(struct platform_device *pdev) if (!tegra) return -ENOMEM; + tegra->soc = of_device_get_match_data(&pdev->dev); + tegra->regs = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(tegra->regs)) return PTR_ERR(tegra->regs); @@ -859,9 +884,9 @@ static int tegra_devfreq_probe(struct platform_device *pdev) tegra->max_freq = rate / KHZ; - for (i = 0; i < ARRAY_SIZE(actmon_device_configs); i++) { + for (i = 0; i < ARRAY_SIZE(tegra->devices); i++) { dev = tegra->devices + i; - dev->config = actmon_device_configs + i; + dev->config = tegra->soc->configs + i; dev->regs = tegra->regs + dev->config->offset; } @@ -923,9 +948,24 @@ static int tegra_devfreq_remove(struct platform_device *pdev) return 0; } +static const struct tegra_devfreq_soc_data tegra124_soc = { + .configs = tegra124_device_configs, + + /* + * Activity counter is incremented every 256 memory transactions, + * and each transaction takes 4 EMC clocks. + */ + .count_weight = 4 * 256, +}; + +static const struct tegra_devfreq_soc_data tegra30_soc = { + .configs = tegra30_device_configs, + .count_weight = 2 * 256, +}; + static const struct of_device_id tegra_devfreq_of_match[] = { - { .compatible = "nvidia,tegra30-actmon" }, - { .compatible = "nvidia,tegra124-actmon" }, + { .compatible = "nvidia,tegra30-actmon", .data = &tegra30_soc, }, + { .compatible = "nvidia,tegra124-actmon", .data = &tegra124_soc, }, { }, }; -- 2.29.2
WARNING: multiple messages have this Message-ID (diff)
From: Dmitry Osipenko <digetx@gmail.com> To: Thierry Reding <thierry.reding@gmail.com>, Jonathan Hunter <jonathanh@nvidia.com>, Georgi Djakov <georgi.djakov@linaro.org>, Rob Herring <robh+dt@kernel.org>, Michael Turquette <mturquette@baylibre.com>, Stephen Boyd <sboyd@kernel.org>, Peter De Schrijver <pdeschrijver@nvidia.com>, MyungJoo Ham <myungjoo.ham@samsung.com>, Kyungmin Park <kyungmin.park@samsung.com>, Chanwoo Choi <cw00.choi@samsung.com>, Mikko Perttunen <cyndis@kapsi.fi>, Viresh Kumar <vireshk@kernel.org>, Peter Geis <pgwipeout@gmail.com>, Nicolas Chauvet <kwizart@gmail.com>, Krzysztof Kozlowski <krzk@kernel.org> Cc: linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-pm@vger.kernel.org Subject: [PATCH v8 17/26] PM / devfreq: tegra30: Separate configurations per-SoC generation Date: Wed, 11 Nov 2020 04:14:47 +0300 [thread overview] Message-ID: <20201111011456.7875-18-digetx@gmail.com> (raw) In-Reply-To: <20201111011456.7875-1-digetx@gmail.com> Previously we were using count-weight of the T124 for T30 in order to get EMC clock rate that was reasonable for T30. In fact the count-weight should be x2 times smaller on T30, but then devfreq was producing a bit too low EMC clock rate for ISO memory clients, like display controller for example. Now both Tegra ACTMON and Tegra DRM display drivers support interconnect framework and display driver tells to ICC what a minimum memory bandwidth is needed, preventing FIFO underflows. Thus, now we can use a proper count-weight value for Tegra30 and MC_ALL device config needs a bit more aggressive boosting. Add a separate ACTMON driver configuration that is specific to Tegra30. Tested-by: Peter Geis <pgwipeout@gmail.com> Tested-by: Nicolas Chauvet <kwizart@gmail.com> Acked-by: Chanwoo Choi <cw00.choi@samsung.com> Signed-off-by: Dmitry Osipenko <digetx@gmail.com> --- drivers/devfreq/tegra30-devfreq.c | 68 ++++++++++++++++++++++++------- 1 file changed, 54 insertions(+), 14 deletions(-) diff --git a/drivers/devfreq/tegra30-devfreq.c b/drivers/devfreq/tegra30-devfreq.c index ed6d4469c8c7..36ba82c3898c 100644 --- a/drivers/devfreq/tegra30-devfreq.c +++ b/drivers/devfreq/tegra30-devfreq.c @@ -57,13 +57,6 @@ #define ACTMON_BELOW_WMARK_WINDOW 3 #define ACTMON_BOOST_FREQ_STEP 16000 -/* - * Activity counter is incremented every 256 memory transactions, and each - * transaction takes 4 EMC clocks for Tegra124; So the COUNT_WEIGHT is - * 4 * 256 = 1024. - */ -#define ACTMON_COUNT_WEIGHT 0x400 - /* * ACTMON_AVERAGE_WINDOW_LOG2: default value for @DEV_CTRL_K_VAL, which * translates to 2 ^ (K_VAL + 1). ex: 2 ^ (6 + 1) = 128 @@ -111,7 +104,7 @@ enum tegra_actmon_device { MCCPU, }; -static const struct tegra_devfreq_device_config actmon_device_configs[] = { +static const struct tegra_devfreq_device_config tegra124_device_configs[] = { { /* MCALL: All memory accesses (including from the CPUs) */ .offset = 0x1c0, @@ -133,6 +126,28 @@ static const struct tegra_devfreq_device_config actmon_device_configs[] = { }, }; +static const struct tegra_devfreq_device_config tegra30_device_configs[] = { + { + /* MCALL: All memory accesses (including from the CPUs) */ + .offset = 0x1c0, + .irq_mask = 1 << 26, + .boost_up_coeff = 200, + .boost_down_coeff = 50, + .boost_up_threshold = 20, + .boost_down_threshold = 10, + }, + { + /* MCCPU: memory accesses from the CPUs */ + .offset = 0x200, + .irq_mask = 1 << 25, + .boost_up_coeff = 800, + .boost_down_coeff = 40, + .boost_up_threshold = 27, + .boost_down_threshold = 10, + .avg_dependency_threshold = 16000, /* 16MHz in kHz units */ + }, +}; + /** * struct tegra_devfreq_device - state specific to an ACTMON device * @@ -155,6 +170,12 @@ struct tegra_devfreq_device { unsigned long target_freq; }; +struct tegra_devfreq_soc_data { + const struct tegra_devfreq_device_config *configs; + /* Weight value for count measurements */ + unsigned int count_weight; +}; + struct tegra_devfreq { struct devfreq *devfreq; struct opp_table *opp_table; @@ -171,11 +192,13 @@ struct tegra_devfreq { struct delayed_work cpufreq_update_work; struct notifier_block cpu_rate_change_nb; - struct tegra_devfreq_device devices[ARRAY_SIZE(actmon_device_configs)]; + struct tegra_devfreq_device devices[2]; unsigned int irq; bool started; + + const struct tegra_devfreq_soc_data *soc; }; struct tegra_actmon_emc_ratio { @@ -488,7 +511,7 @@ static void tegra_actmon_configure_device(struct tegra_devfreq *tegra, tegra_devfreq_update_avg_wmark(tegra, dev); tegra_devfreq_update_wmark(tegra, dev); - device_writel(dev, ACTMON_COUNT_WEIGHT, ACTMON_DEV_COUNT_WEIGHT); + device_writel(dev, tegra->soc->count_weight, ACTMON_DEV_COUNT_WEIGHT); device_writel(dev, ACTMON_INTR_STATUS_CLEAR, ACTMON_DEV_INTR_STATUS); val |= ACTMON_DEV_CTRL_ENB_PERIODIC; @@ -786,6 +809,8 @@ static int tegra_devfreq_probe(struct platform_device *pdev) if (!tegra) return -ENOMEM; + tegra->soc = of_device_get_match_data(&pdev->dev); + tegra->regs = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(tegra->regs)) return PTR_ERR(tegra->regs); @@ -859,9 +884,9 @@ static int tegra_devfreq_probe(struct platform_device *pdev) tegra->max_freq = rate / KHZ; - for (i = 0; i < ARRAY_SIZE(actmon_device_configs); i++) { + for (i = 0; i < ARRAY_SIZE(tegra->devices); i++) { dev = tegra->devices + i; - dev->config = actmon_device_configs + i; + dev->config = tegra->soc->configs + i; dev->regs = tegra->regs + dev->config->offset; } @@ -923,9 +948,24 @@ static int tegra_devfreq_remove(struct platform_device *pdev) return 0; } +static const struct tegra_devfreq_soc_data tegra124_soc = { + .configs = tegra124_device_configs, + + /* + * Activity counter is incremented every 256 memory transactions, + * and each transaction takes 4 EMC clocks. + */ + .count_weight = 4 * 256, +}; + +static const struct tegra_devfreq_soc_data tegra30_soc = { + .configs = tegra30_device_configs, + .count_weight = 2 * 256, +}; + static const struct of_device_id tegra_devfreq_of_match[] = { - { .compatible = "nvidia,tegra30-actmon" }, - { .compatible = "nvidia,tegra124-actmon" }, + { .compatible = "nvidia,tegra30-actmon", .data = &tegra30_soc, }, + { .compatible = "nvidia,tegra124-actmon", .data = &tegra124_soc, }, { }, }; -- 2.29.2 _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
next prev parent reply other threads:[~2020-11-11 1:17 UTC|newest] Thread overview: 108+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-11-11 1:14 [PATCH v8 00/26] Introduce memory interconnect for NVIDIA Tegra SoCs Dmitry Osipenko 2020-11-11 1:14 ` Dmitry Osipenko 2020-11-11 1:14 ` [PATCH v8 01/26] memory: tegra: Correct stub of devm_tegra_memory_controller_get() Dmitry Osipenko 2020-11-11 1:14 ` Dmitry Osipenko 2020-11-14 15:36 ` Krzysztof Kozlowski 2020-11-14 15:36 ` Krzysztof Kozlowski 2020-11-11 1:14 ` [PATCH v8 02/26] memory: tegra20-emc: Use dev_pm_opp_set_clkname() Dmitry Osipenko 2020-11-11 1:14 ` Dmitry Osipenko 2020-11-11 5:45 ` Viresh Kumar 2020-11-11 5:45 ` Viresh Kumar 2020-11-11 5:54 ` Viresh Kumar 2020-11-11 5:54 ` Viresh Kumar 2020-11-11 6:15 ` Dmitry Osipenko 2020-11-11 6:15 ` Dmitry Osipenko 2020-11-14 15:37 ` Krzysztof Kozlowski 2020-11-14 15:37 ` Krzysztof Kozlowski 2020-11-11 1:14 ` [PATCH v8 03/26] memory: tegra20-emc: Factor out clk initialization Dmitry Osipenko 2020-11-11 1:14 ` Dmitry Osipenko 2020-11-14 15:37 ` Krzysztof Kozlowski 2020-11-14 15:37 ` Krzysztof Kozlowski 2020-11-11 1:14 ` [PATCH v8 04/26] memory: tegra20-emc: Add devfreq support Dmitry Osipenko 2020-11-11 1:14 ` Dmitry Osipenko 2020-11-11 2:23 ` Chanwoo Choi 2020-11-11 2:23 ` Chanwoo Choi 2020-11-14 15:38 ` Krzysztof Kozlowski 2020-11-14 15:38 ` Krzysztof Kozlowski 2020-11-11 1:14 ` [PATCH v8 05/26] memory: tegra20-emc: Remove IRQ number from error message Dmitry Osipenko 2020-11-11 1:14 ` Dmitry Osipenko 2020-11-14 15:38 ` Krzysztof Kozlowski 2020-11-14 15:38 ` Krzysztof Kozlowski 2020-11-11 1:14 ` [PATCH v8 06/26] memory: tegra30: Add FIFO sizes to memory clients Dmitry Osipenko 2020-11-11 1:14 ` Dmitry Osipenko 2020-11-14 15:39 ` Krzysztof Kozlowski 2020-11-14 15:39 ` Krzysztof Kozlowski 2020-11-11 1:14 ` [PATCH v8 07/26] memory: tegra30-emc: Make driver modular Dmitry Osipenko 2020-11-11 1:14 ` Dmitry Osipenko 2020-11-14 15:41 ` Krzysztof Kozlowski 2020-11-14 15:41 ` Krzysztof Kozlowski 2020-11-11 1:14 ` [PATCH v8 08/26] memory: tegra30-emc: Continue probing if timings are missing in device-tree Dmitry Osipenko 2020-11-11 1:14 ` Dmitry Osipenko 2020-11-14 15:42 ` Krzysztof Kozlowski 2020-11-14 15:42 ` Krzysztof Kozlowski 2020-11-15 9:25 ` Dmitry Osipenko 2020-11-15 9:25 ` Dmitry Osipenko 2020-11-11 1:14 ` [PATCH v8 09/26] memory: tegra30: Support interconnect framework Dmitry Osipenko 2020-11-11 1:14 ` Dmitry Osipenko 2020-11-11 5:53 ` Viresh Kumar 2020-11-11 5:53 ` Viresh Kumar 2020-11-11 6:14 ` Dmitry Osipenko 2020-11-11 6:14 ` Dmitry Osipenko 2020-11-11 6:18 ` Viresh Kumar 2020-11-11 6:18 ` Viresh Kumar 2020-11-11 7:32 ` Dmitry Osipenko 2020-11-11 7:32 ` Dmitry Osipenko 2020-11-11 7:54 ` Viresh Kumar 2020-11-11 7:54 ` Viresh Kumar 2020-11-11 14:08 ` Dmitry Osipenko 2020-11-11 14:08 ` Dmitry Osipenko 2020-11-11 1:14 ` [PATCH v8 10/26] memory: tegra30-emc: Factor out clk initialization Dmitry Osipenko 2020-11-11 1:14 ` Dmitry Osipenko 2020-11-11 8:51 ` Krzysztof Kozlowski 2020-11-11 8:51 ` Krzysztof Kozlowski 2020-11-11 8:52 ` Krzysztof Kozlowski 2020-11-11 8:52 ` Krzysztof Kozlowski 2020-11-11 9:01 ` Dmitry Osipenko 2020-11-11 9:01 ` Dmitry Osipenko 2020-11-11 1:14 ` [PATCH v8 11/26] memory: tegra124-emc: Make driver modular Dmitry Osipenko 2020-11-11 1:14 ` Dmitry Osipenko 2020-11-11 9:04 ` Krzysztof Kozlowski 2020-11-11 9:04 ` Krzysztof Kozlowski 2020-11-11 9:17 ` Dmitry Osipenko 2020-11-11 9:17 ` Dmitry Osipenko 2020-11-11 9:26 ` Krzysztof Kozlowski 2020-11-11 9:26 ` Krzysztof Kozlowski 2020-11-11 10:25 ` Dmitry Osipenko 2020-11-11 10:25 ` Dmitry Osipenko 2020-11-11 11:53 ` Dmitry Osipenko 2020-11-11 11:53 ` Dmitry Osipenko 2020-11-11 1:14 ` [PATCH v8 12/26] memory: tegra124-emc: Continue probing if timings are missing in device-tree Dmitry Osipenko 2020-11-11 1:14 ` Dmitry Osipenko 2020-11-11 1:14 ` [PATCH v8 13/26] memory: tegra124: Support interconnect framework Dmitry Osipenko 2020-11-11 1:14 ` Dmitry Osipenko 2020-11-11 1:14 ` [PATCH v8 14/26] drm/tegra: dc: Support memory bandwidth management Dmitry Osipenko 2020-11-11 1:14 ` Dmitry Osipenko 2020-11-11 1:14 ` [PATCH v8 15/26] drm/tegra: dc: Extend debug stats with total number of events Dmitry Osipenko 2020-11-11 1:14 ` Dmitry Osipenko 2020-11-11 1:14 ` [PATCH v8 16/26] PM / devfreq: tegra30: Support interconnect and OPPs from device-tree Dmitry Osipenko 2020-11-11 1:14 ` Dmitry Osipenko 2020-11-11 1:14 ` Dmitry Osipenko [this message] 2020-11-11 1:14 ` [PATCH v8 17/26] PM / devfreq: tegra30: Separate configurations per-SoC generation Dmitry Osipenko 2020-11-11 1:14 ` [PATCH v8 18/26] PM / devfreq: tegra20: Deprecate in a favor of emc-stat based driver Dmitry Osipenko 2020-11-11 1:14 ` Dmitry Osipenko 2020-11-11 1:14 ` [PATCH v8 19/26] ARM: tegra: Correct EMC registers size in Tegra20 device-tree Dmitry Osipenko 2020-11-11 1:14 ` Dmitry Osipenko 2020-11-11 1:14 ` [PATCH v8 20/26] ARM: tegra: Add interconnect properties to " Dmitry Osipenko 2020-11-11 1:14 ` Dmitry Osipenko 2020-11-11 1:14 ` [PATCH v8 21/26] ARM: tegra: Add interconnect properties to Tegra30 device-tree Dmitry Osipenko 2020-11-11 1:14 ` Dmitry Osipenko 2020-11-11 1:14 ` [PATCH v8 22/26] ARM: tegra: Add interconnect properties to Tegra124 device-tree Dmitry Osipenko 2020-11-11 1:14 ` Dmitry Osipenko 2020-11-11 1:14 ` [PATCH v8 23/26] ARM: tegra: Add nvidia,memory-controller phandle to Tegra20 EMC device-tree Dmitry Osipenko 2020-11-11 1:14 ` [PATCH v8 23/26] ARM: tegra: Add nvidia, memory-controller " Dmitry Osipenko 2020-11-11 1:14 ` [PATCH v8 24/26] ARM: tegra: Add DVFS properties to Tegra20 EMC device-tree node Dmitry Osipenko 2020-11-11 1:14 ` Dmitry Osipenko 2020-11-11 1:14 ` [PATCH v8 25/26] ARM: tegra: Add DVFS properties to Tegra30 EMC and ACTMON device-tree nodes Dmitry Osipenko 2020-11-11 1:14 ` Dmitry Osipenko 2020-11-11 1:14 ` [PATCH v8 26/26] ARM: tegra: Add DVFS properties to Tegra124 " Dmitry Osipenko 2020-11-11 1:14 ` Dmitry Osipenko
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