From: Vivek Gautam <vivek.gautam@codeaurora.org> To: joro@8bytes.org, robin.murphy@arm.com, robh+dt@kernel.org, mark.rutland@arm.com, will.deacon@arm.com, m.szyprowski@samsung.com, sboyd@codeaurora.org, robdclark@gmail.com, iommu@lists.linux-foundation.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-clk@vger.kernel.org Cc: linux-arm-msm@vger.kernel.org, sricharan@codeaurora.org, stanimir.varbanov@linaro.org, architt@codeaurora.org, vivek.gautam@codeaurora.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH V4 5/6] iommu/arm-smmu: Add support for MMU40x/500 clocks Date: Thu, 6 Jul 2017 15:07:04 +0530 [thread overview] Message-ID: <1499333825-7658-6-git-send-email-vivek.gautam@codeaurora.org> (raw) In-Reply-To: <1499333825-7658-1-git-send-email-vivek.gautam@codeaurora.org> From: Sricharan R <sricharan@codeaurora.org> The MMU400x/500 is the implementation of the SMMUv2 arch specification. It is split in to two blocks TBU, TCU. TBU caches the page table, instantiated for each master locally, clocked by the TBUn_clk. TCU manages the address translation with PTW and has the programming interface as well, clocked using the TCU_CLK. The TBU can also be sharing the same clock domain as TCU, in which case both are clocked using the TCU_CLK. This defines the clock bindings for the same and adds the clock names to compatible data. Signed-off-by: Sricharan R <sricharan@codeaurora.org> [vivek: clock rework and cleanup] Signed-off-by: Vivek Gautam <vivek.gautam@codeaurora.org> --- .../devicetree/bindings/iommu/arm,smmu.txt | 24 ++++++++++++++++++++++ drivers/iommu/arm-smmu.c | 12 ++++++++++- 2 files changed, 35 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/iommu/arm,smmu.txt b/Documentation/devicetree/bindings/iommu/arm,smmu.txt index 8a6ffce12af5..00331752d355 100644 --- a/Documentation/devicetree/bindings/iommu/arm,smmu.txt +++ b/Documentation/devicetree/bindings/iommu/arm,smmu.txt @@ -71,6 +71,26 @@ conditions. or using stream matching with #iommu-cells = <2>, and may be ignored if present in such cases. +- clock-names: Should be "tcu" and "iface" for "arm,mmu-400", + "arm,mmu-401" and "arm,mmu-500" + + "tcu" clock is required for smmu's register access using the + programming interface and ptw for downstream bus access. This + clock is also used for access to the TBU connected to the + master locally. Sometimes however, TBU is clocked along with + the master. + + "iface" clock is required to access the TCU's programming + interface, apart from the "tcu" clock. + +- clocks: Phandles for respective clocks described by clock-names. + +- power-domains: Phandles to SMMU's power domain specifier. This is + required even if SMMU belongs to the master's power + domain, as the SMMU will have to be enabled and + accessed before master gets enabled and linked to its + SMMU. + ** Deprecated properties: - mmu-masters (deprecated in favour of the generic "iommus" binding) : @@ -95,6 +115,10 @@ conditions. <0 36 4>, <0 37 4>; #iommu-cells = <1>; + clocks = <&gcc GCC_SMMU_CFG_CLK>, + <&gcc GCC_APSS_TCU_CLK>; + + clock-names = "iface", "tcu"; }; /* device with two stream IDs, 0 and 7 */ diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c index 75567d9698ab..7bb09280fa11 100644 --- a/drivers/iommu/arm-smmu.c +++ b/drivers/iommu/arm-smmu.c @@ -1947,9 +1947,19 @@ struct arm_smmu_match_data { ARM_SMMU_MATCH_DATA(smmu_generic_v1, ARM_SMMU_V1, GENERIC_SMMU); ARM_SMMU_MATCH_DATA(smmu_generic_v2, ARM_SMMU_V2, GENERIC_SMMU); ARM_SMMU_MATCH_DATA(arm_mmu401, ARM_SMMU_V1_64K, GENERIC_SMMU); -ARM_SMMU_MATCH_DATA(arm_mmu500, ARM_SMMU_V2, ARM_MMU500); ARM_SMMU_MATCH_DATA(cavium_smmuv2, ARM_SMMU_V2, CAVIUM_SMMUV2); +static const char * const arm_mmu500_clks[] = { + "tcu", "iface", +}; + +static const struct arm_smmu_match_data arm_mmu500 = { + .version = ARM_SMMU_V2, + .model = ARM_MMU500, + .clks = arm_mmu500_clks, + .num_clks = ARRAY_SIZE(arm_mmu500_clks), +}; + static const struct of_device_id arm_smmu_of_match[] = { { .compatible = "arm,smmu-v1", .data = &smmu_generic_v1 }, { .compatible = "arm,smmu-v2", .data = &smmu_generic_v2 }, -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project
WARNING: multiple messages have this Message-ID (diff)
From: vivek.gautam@codeaurora.org (Vivek Gautam) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH V4 5/6] iommu/arm-smmu: Add support for MMU40x/500 clocks Date: Thu, 6 Jul 2017 15:07:04 +0530 [thread overview] Message-ID: <1499333825-7658-6-git-send-email-vivek.gautam@codeaurora.org> (raw) In-Reply-To: <1499333825-7658-1-git-send-email-vivek.gautam@codeaurora.org> From: Sricharan R <sricharan@codeaurora.org> The MMU400x/500 is the implementation of the SMMUv2 arch specification. It is split in to two blocks TBU, TCU. TBU caches the page table, instantiated for each master locally, clocked by the TBUn_clk. TCU manages the address translation with PTW and has the programming interface as well, clocked using the TCU_CLK. The TBU can also be sharing the same clock domain as TCU, in which case both are clocked using the TCU_CLK. This defines the clock bindings for the same and adds the clock names to compatible data. Signed-off-by: Sricharan R <sricharan@codeaurora.org> [vivek: clock rework and cleanup] Signed-off-by: Vivek Gautam <vivek.gautam@codeaurora.org> --- .../devicetree/bindings/iommu/arm,smmu.txt | 24 ++++++++++++++++++++++ drivers/iommu/arm-smmu.c | 12 ++++++++++- 2 files changed, 35 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/iommu/arm,smmu.txt b/Documentation/devicetree/bindings/iommu/arm,smmu.txt index 8a6ffce12af5..00331752d355 100644 --- a/Documentation/devicetree/bindings/iommu/arm,smmu.txt +++ b/Documentation/devicetree/bindings/iommu/arm,smmu.txt @@ -71,6 +71,26 @@ conditions. or using stream matching with #iommu-cells = <2>, and may be ignored if present in such cases. +- clock-names: Should be "tcu" and "iface" for "arm,mmu-400", + "arm,mmu-401" and "arm,mmu-500" + + "tcu" clock is required for smmu's register access using the + programming interface and ptw for downstream bus access. This + clock is also used for access to the TBU connected to the + master locally. Sometimes however, TBU is clocked along with + the master. + + "iface" clock is required to access the TCU's programming + interface, apart from the "tcu" clock. + +- clocks: Phandles for respective clocks described by clock-names. + +- power-domains: Phandles to SMMU's power domain specifier. This is + required even if SMMU belongs to the master's power + domain, as the SMMU will have to be enabled and + accessed before master gets enabled and linked to its + SMMU. + ** Deprecated properties: - mmu-masters (deprecated in favour of the generic "iommus" binding) : @@ -95,6 +115,10 @@ conditions. <0 36 4>, <0 37 4>; #iommu-cells = <1>; + clocks = <&gcc GCC_SMMU_CFG_CLK>, + <&gcc GCC_APSS_TCU_CLK>; + + clock-names = "iface", "tcu"; }; /* device with two stream IDs, 0 and 7 */ diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c index 75567d9698ab..7bb09280fa11 100644 --- a/drivers/iommu/arm-smmu.c +++ b/drivers/iommu/arm-smmu.c @@ -1947,9 +1947,19 @@ struct arm_smmu_match_data { ARM_SMMU_MATCH_DATA(smmu_generic_v1, ARM_SMMU_V1, GENERIC_SMMU); ARM_SMMU_MATCH_DATA(smmu_generic_v2, ARM_SMMU_V2, GENERIC_SMMU); ARM_SMMU_MATCH_DATA(arm_mmu401, ARM_SMMU_V1_64K, GENERIC_SMMU); -ARM_SMMU_MATCH_DATA(arm_mmu500, ARM_SMMU_V2, ARM_MMU500); ARM_SMMU_MATCH_DATA(cavium_smmuv2, ARM_SMMU_V2, CAVIUM_SMMUV2); +static const char * const arm_mmu500_clks[] = { + "tcu", "iface", +}; + +static const struct arm_smmu_match_data arm_mmu500 = { + .version = ARM_SMMU_V2, + .model = ARM_MMU500, + .clks = arm_mmu500_clks, + .num_clks = ARRAY_SIZE(arm_mmu500_clks), +}; + static const struct of_device_id arm_smmu_of_match[] = { { .compatible = "arm,smmu-v1", .data = &smmu_generic_v1 }, { .compatible = "arm,smmu-v2", .data = &smmu_generic_v2 }, -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project
next prev parent reply other threads:[~2017-07-06 9:37 UTC|newest] Thread overview: 168+ messages / expand[flat|nested] mbox.gz Atom feed top 2017-07-06 9:36 [PATCH V4 0/6] iommu/arm-smmu: Add runtime pm/sleep support Vivek Gautam 2017-07-06 9:36 ` Vivek Gautam 2017-07-06 9:37 ` [PATCH V4 1/6] iommu/arm-smmu: Fix the error path in arm_smmu_add_device Vivek Gautam 2017-07-06 9:37 ` Vivek Gautam 2017-07-06 9:37 ` [PATCH V4 2/6] iommu/arm-smmu: Add pm_runtime/sleep ops Vivek Gautam 2017-07-06 9:37 ` Vivek Gautam 2017-07-06 9:37 ` Vivek Gautam [not found] ` <1499333825-7658-3-git-send-email-vivek.gautam-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org> 2017-07-12 22:58 ` Stephen Boyd 2017-07-12 22:58 ` Stephen Boyd 2017-07-12 22:58 ` Stephen Boyd [not found] ` <20170712225821.GB22780-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org> 2017-07-12 23:01 ` Stephen Boyd 2017-07-12 23:01 ` Stephen Boyd 2017-07-12 23:01 ` Stephen Boyd 2017-07-13 3:57 ` Vivek Gautam 2017-07-13 3:57 ` Vivek Gautam 2017-07-06 9:37 ` [PATCH V4 3/6] iommu/arm-smmu: Invoke pm_runtime during probe, add/remove device Vivek Gautam 2017-07-06 9:37 ` Vivek Gautam [not found] ` <1499333825-7658-4-git-send-email-vivek.gautam-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org> 2017-07-12 22:54 ` Stephen Boyd 2017-07-12 22:54 ` Stephen Boyd 2017-07-12 22:54 ` Stephen Boyd [not found] ` <20170712225459.GZ22780-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org> 2017-07-13 5:13 ` Vivek Gautam 2017-07-13 5:13 ` Vivek Gautam 2017-07-13 5:13 ` Vivek Gautam [not found] ` <5ee0bacd-e557-a6c4-a897-844fb12ea6ae-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org> 2017-07-13 5:35 ` Sricharan R 2017-07-13 5:35 ` Sricharan R 2017-07-13 5:35 ` Sricharan R [not found] ` <4dbc938c-ac88-9bd4-cf00-458008ae24c1-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org> 2017-07-13 11:50 ` Rob Clark 2017-07-13 11:50 ` Rob Clark 2017-07-13 11:50 ` Rob Clark 2017-07-13 11:50 ` Rob Clark [not found] ` <CAF6AEGsFOtsOjt1sLNPSFLEcu-7d1zxCOhTeC+P8e0TDbb1dSA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org> 2017-07-13 12:02 ` Marek Szyprowski 2017-07-13 12:02 ` Marek Szyprowski 2017-07-13 12:02 ` Marek Szyprowski 2017-07-13 12:02 ` Marek Szyprowski 2017-07-13 12:10 ` Rob Clark 2017-07-13 12:10 ` Rob Clark 2017-07-13 12:10 ` Rob Clark [not found] ` <CAF6AEGsfDewRUHLUbFKT1Q+8U2BkmFMHo4ZBSwSGspU3ktUY8g-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org> 2017-07-13 12:23 ` Marek Szyprowski 2017-07-13 12:23 ` Marek Szyprowski 2017-07-13 12:23 ` Marek Szyprowski 2017-07-13 12:23 ` Marek Szyprowski 2017-07-13 13:53 ` Sricharan R 2017-07-13 13:53 ` Sricharan R 2017-07-13 13:53 ` Sricharan R 2017-07-13 13:53 ` Sricharan R [not found] ` <60a56ae6-ed9d-57cd-130f-5bd9d32d4d58-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org> 2017-07-13 14:55 ` Rob Clark 2017-07-13 14:55 ` Rob Clark 2017-07-13 14:55 ` Rob Clark 2017-07-13 14:55 ` Rob Clark 2017-07-14 17:07 ` Will Deacon 2017-07-14 17:07 ` Will Deacon 2017-07-14 17:07 ` Will Deacon 2017-07-14 17:42 ` Rob Clark 2017-07-14 17:42 ` Rob Clark 2017-07-14 17:42 ` Rob Clark 2017-07-14 18:06 ` Will Deacon 2017-07-14 18:06 ` Will Deacon 2017-07-14 18:06 ` Will Deacon 2017-07-14 18:25 ` Rob Clark 2017-07-14 18:25 ` Rob Clark 2017-07-14 18:25 ` Rob Clark 2017-07-14 19:01 ` Will Deacon 2017-07-14 19:01 ` Will Deacon 2017-07-14 19:01 ` Will Deacon [not found] ` <20170714190113.GE26488-5wv7dgnIgG8@public.gmane.org> 2017-07-14 19:34 ` Rob Clark 2017-07-14 19:34 ` Rob Clark 2017-07-14 19:34 ` Rob Clark 2017-07-14 19:34 ` Rob Clark 2017-07-14 19:36 ` Will Deacon 2017-07-14 19:36 ` Will Deacon 2017-07-14 19:36 ` Will Deacon 2017-07-14 19:39 ` Rob Clark 2017-07-14 19:39 ` Rob Clark 2017-07-14 19:39 ` Rob Clark 2017-07-17 11:46 ` Sricharan R 2017-07-17 11:46 ` Sricharan R 2017-07-17 11:46 ` Sricharan R [not found] ` <6cd287bb-25c0-a7bd-8d3c-a63b9da0fd25-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org> 2017-07-17 12:28 ` Sricharan R 2017-07-17 12:28 ` Sricharan R 2017-07-17 12:28 ` Sricharan R 2017-07-17 12:28 ` Sricharan R 2017-07-24 15:31 ` Vivek Gautam 2017-07-24 15:31 ` Vivek Gautam 2017-07-24 15:31 ` Vivek Gautam [not found] ` <CAFp+6iFfu2-qrDDim7fzKKLqMcSVMmOr7esqBZ-xEeLTOOTNLA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org> 2017-08-02 9:53 ` [PATCH] iommu/arm-smmu: Defer TLB flush in case of unmap op Vivek Gautam 2017-08-02 9:53 ` Vivek Gautam 2017-08-02 9:53 ` Vivek Gautam 2017-08-02 12:17 ` Robin Murphy 2017-08-02 12:17 ` Robin Murphy [not found] ` <35aeb7dd-4fe6-3175-2252-41c3c54873a9-5wv7dgnIgG8@public.gmane.org> 2017-08-03 5:35 ` Vivek Gautam 2017-08-03 5:35 ` Vivek Gautam 2017-08-03 5:35 ` Vivek Gautam 2017-08-04 17:04 ` Robin Murphy 2017-08-04 17:04 ` Robin Murphy 2017-08-07 7:44 ` Vivek Gautam 2017-08-07 7:44 ` Vivek Gautam 2017-08-07 7:44 ` Vivek Gautam 2017-09-06 5:37 ` [PATCH v2 1/1] " Vivek Gautam [not found] ` <1504676255-15980-1-git-send-email-vivek.gautam-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org> 2017-09-13 11:04 ` Vivek Gautam 2017-10-13 19:08 ` Will Deacon 2017-11-20 17:17 ` Vivek Gautam 2017-08-07 8:27 ` [PATCH V4 3/6] iommu/arm-smmu: Invoke pm_runtime during probe, add/remove device Vivek Gautam 2017-08-07 8:27 ` Vivek Gautam 2017-08-07 8:27 ` Vivek Gautam 2017-08-07 8:27 ` Vivek Gautam 2017-08-07 12:29 ` Rob Clark 2017-08-07 12:29 ` Rob Clark 2017-08-07 12:29 ` Rob Clark [not found] ` <CAF6AEGsw2=nERuJ8UCBr_kTBS0TigaA9LL1Hxw3JmNiu4oycOA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org> 2017-11-14 18:30 ` Vivek Gautam 2017-11-14 18:30 ` Vivek Gautam 2017-11-14 18:30 ` Vivek Gautam 2017-11-14 18:30 ` Vivek Gautam [not found] ` <CAFp+6iGyB-iVb+vyDr6Dzk1FG6baiNy_kZWjB3sm_GViDh6rnQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org> 2017-11-27 22:22 ` Stephen Boyd 2017-11-27 22:22 ` Stephen Boyd 2017-11-27 22:22 ` Stephen Boyd 2017-11-27 22:22 ` Stephen Boyd [not found] ` <20171127222238.GF18379-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org> 2017-11-27 23:43 ` Rob Clark 2017-11-27 23:43 ` Rob Clark 2017-11-27 23:43 ` Rob Clark 2017-11-27 23:43 ` Rob Clark 2017-11-28 13:43 ` Vivek Gautam 2017-11-28 13:43 ` Vivek Gautam 2017-11-28 13:43 ` Vivek Gautam [not found] ` <3a2f74e9-90cf-d843-d801-15eb614d7abe-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org> 2017-11-28 20:05 ` Rob Clark 2017-11-28 20:05 ` Rob Clark 2017-11-28 20:05 ` Rob Clark 2017-11-28 20:05 ` Rob Clark 2017-07-13 13:57 ` Vivek Gautam 2017-07-13 13:57 ` Vivek Gautam 2017-07-13 13:57 ` Vivek Gautam 2017-07-13 13:57 ` Vivek Gautam [not found] ` <CAFp+6iFdogDfKbwWta3AMGu2GuZ9NaR+Dv373N7LwwrF5cFYwQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org> 2017-07-13 14:01 ` Vivek Gautam 2017-07-13 14:01 ` Vivek Gautam 2017-07-13 14:01 ` Vivek Gautam 2017-07-13 14:01 ` Vivek Gautam 2017-07-13 6:48 ` Stephen Boyd 2017-07-13 6:48 ` Stephen Boyd 2017-07-13 6:48 ` Stephen Boyd 2017-07-13 9:50 ` Robin Murphy 2017-07-13 9:50 ` Robin Murphy 2017-07-13 11:53 ` Rob Clark 2017-07-13 11:53 ` Rob Clark 2017-07-13 11:53 ` Rob Clark 2017-07-06 9:37 ` [PATCH V4 4/6] iommu/arm-smmu: Add the device_link between masters and smmu Vivek Gautam 2017-07-06 9:37 ` Vivek Gautam [not found] ` <1499333825-7658-5-git-send-email-vivek.gautam-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org> 2017-07-12 22:55 ` Stephen Boyd 2017-07-12 22:55 ` Stephen Boyd 2017-07-12 22:55 ` Stephen Boyd [not found] ` <20170712225547.GA22780-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org> 2017-07-13 3:59 ` Vivek Gautam 2017-07-13 3:59 ` Vivek Gautam 2017-07-13 3:59 ` Vivek Gautam 2017-07-06 9:37 ` Vivek Gautam [this message] 2017-07-06 9:37 ` [PATCH V4 5/6] iommu/arm-smmu: Add support for MMU40x/500 clocks Vivek Gautam [not found] ` <1499333825-7658-6-git-send-email-vivek.gautam-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org> 2017-07-10 3:37 ` Rob Herring 2017-07-10 3:37 ` Rob Herring 2017-07-10 3:37 ` Rob Herring 2017-07-11 5:18 ` Vivek Gautam 2017-07-11 5:18 ` Vivek Gautam [not found] ` <1499333825-7658-1-git-send-email-vivek.gautam-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org> 2017-07-06 9:37 ` [PATCH V4 6/6] iommu/arm-smmu: Add support for qcom,msm8996-smmu-v2 clocks Vivek Gautam 2017-07-06 9:37 ` [PATCH V4 6/6] iommu/arm-smmu: Add support for qcom, msm8996-smmu-v2 clocks Vivek Gautam 2017-07-06 9:37 ` [PATCH V4 6/6] iommu/arm-smmu: Add support for qcom,msm8996-smmu-v2 clocks Vivek Gautam [not found] ` <1499333825-7658-7-git-send-email-vivek.gautam-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org> 2017-07-10 3:40 ` Rob Herring 2017-07-10 3:40 ` Rob Herring 2017-07-10 3:40 ` Rob Herring 2017-07-10 6:42 ` Vivek Gautam 2017-07-10 6:42 ` Vivek Gautam 2017-07-10 6:42 ` Vivek Gautam 2017-07-10 6:42 ` Vivek Gautam
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