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Thu, 28 Apr 2022 18:55:34 +0900 (KST) Received: from epsmtrp2.samsung.com (unknown [182.195.40.14]) by epcas5p3.samsung.com (KnoxPortal) with ESMTPA id 20220428095533epcas5p3a4762efd30cb4116f245de161df25683~qBtbNVrxa1741717417epcas5p3Y; Thu, 28 Apr 2022 09:55:33 +0000 (GMT) Received: from epsmgms1p1new.samsung.com (unknown [182.195.42.41]) by epsmtrp2.samsung.com (KnoxPortal) with ESMTP id 20220428095533epsmtrp22f9c4d38467aff00fcec8a73b4fee76d~qBtbMKDzN1238812388epsmtrp2j; Thu, 28 Apr 2022 09:55:33 +0000 (GMT) X-AuditID: b6c32a4a-b3bff70000002663-b9-626a64965ff1 Received: from epsmtip2.samsung.com ( [182.195.34.31]) by epsmgms1p1new.samsung.com (Symantec Messaging Gateway) with SMTP id EC.1D.08853.4946A626; Thu, 28 Apr 2022 18:55:32 +0900 (KST) Received: from alimakhtar03 (unknown [107.122.12.5]) by epsmtip2.samsung.com (KnoxPortal) with ESMTPA id 20220428095528epsmtip28de24c0acd85c40fb2876415cbd6cbd2~qBtWyrBsc2197321973epsmtip2C; Thu, 28 Apr 2022 09:55:28 +0000 (GMT) From: "Alim Akhtar" To: "'Marek Szyprowski'" , "'Krzysztof Kozlowski'" , "'Lee Jones'" , "'Rob Herring'" , "'Krzysztof Kozlowski'" , "'Dinh Nguyen'" , "'Michal Simek'" , "'Liviu Dudau'" , "'Sudeep Holla'" , "'Lorenzo Pieralisi'" , "'Ray Jui'" , "'Scott Branden'" , "'Broadcom Kernel Team'" , "'Sylwester Nawrocki'" , , , , Cc: "'Rob Herring'" In-Reply-To: <5eeac2a0-4293-675e-9dc2-25ed8ab3fb8f@samsung.com> Subject: RE: [PATCH 08/10] ARM: dts: exynos: use proper 'dma-channels/requests' properties Date: Thu, 28 Apr 2022 15:25:26 +0530 Message-ID: <017e01d85ae6$1987ae90$4c970bb0$@samsung.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Mailer: Microsoft Outlook 16.0 Thread-Index: AQGQnzfwuAxkOYqHux9KbyQb5tlOAgJNR/79AruheCsBvClGGq1eZHwA Content-Language: en-us X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFnrIJsWRmVeSWpSXmKPExsWy7bCmlu60lKwkgyfHeCzW9h5lsZh/5Byr xdHzu5ks+l48ZLbY+3oru8X9r0cZLTY9vsZqcXnXHDaLGef3MVkcWNrOYvHm9wt2i7VH7rJb vHsZYfF05mY2i9a9R9gt/u/ZwW5x+E07q8W71U8YLZaf2sHiIOyxZt4aRo9Z98+yeWxa1cnm cefaHjaPzUvqPfq2rGL0+LxJzmPv598sARxR2TYZqYkpqUUKqXnJ+SmZeem2St7B8c7xpmYG hrqGlhbmSgp5ibmptkouPgG6bpk5QP8oKZQl5pQChQISi4uV9O1sivJLS1IVMvKLS2yVUgtS cgpMCvSKE3OLS/PS9fJSS6wMDQyMTIEKE7IzHq+dz1SwO7ji397/rA2M15y6GDk4JARMJOZ+ luhi5OIQEtjNKPH37FkmCOcTo8SuSQvYIZxvjBL3+uaxdjFygnXM79vPBpHYyyhx4OcSZgjn JaPEl4dT2EGq2AR0JXYsbgOrEhFYwyZxe/EaJpAEs4CqxJw/v5hBbE4Be4ktf5azgdjCAjES Lz/fYwI5igWoZm1PHkiYV8BS4t3/PkYIW1Di5MwnLBBjtCWWLXzNDHGRgsTPp8vArhMRcJPY cPwQ1CpxiZdHj7BD1DRzSvz+ww9hu0icXvAPKi4s8er4FihbSuLzu71skHDxkFj0RwoinCHx dvl6RgjbXuLAlTksICXMApoS63fpQ2zik+j9/YQJopNXoqNNCKJaVaL53VUWCFtaYmJ3NzQI PST65jWzTGBUnIXkr1lI/pqF5P5ZCMsWMLKsYpRMLSjOTU8tNi0wyksth8d2cn7uJkZwWtfy 2sH48MEHvUOMTByMhxglOJiVRHi/7M5IEuJNSaysSi3Kjy8qzUktPsRoCgzricxSosn5wMyS VxJvaGJpYGJmZmZiaWxmqCTOezp9Q6KQQHpiSWp2ampBahFMHxMHp1QDU+ZR7c2BminsbSwp z5tuavlt9d52Z+d/g5K9ZidsvzZx1JWYHo/zOp3Bey9SP/Of3+a+0GzpXQ1f5E5z7XDPFl20 tST5WKbFY8W5e88fPJagfsR4/2k2U7Xt9rId+829npwMiMpO7ylquMKhEOGtPmkFp5pFUcj9 XW+YZS+tS9nXdINps6GARJne/nm3TWc6SM/S7GlkFzvxJGzDx/1SbG99BX7Zl18qdPLRsFLv 6zf9Nm2T7quooi7nXy+vvixRa50mEjiPm1ley9l5zxN/+7jjdm8e8YSFbhc50uYwtcnul/6x 9anCOcd68i1VJ2k2Oa02chJflV/xldNv4u573Mn3vvn+SniUv3ny9UVKLMUZiYZazEXFiQD0 Ep8VdAQAAA== X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrDIsWRmVeSWpSXmKPExsWy7bCSvO6UlKwkg/VfTS3W9h5lsZh/5Byr xdHzu5ks+l48ZLbY+3oru8X9r0cZLTY9vsZqcXnXHDaLGef3MVkcWNrOYvHm9wt2i7VH7rJb vHsZYfF05mY2i9a9R9gt/u/ZwW5x+E07q8W71U8YLZaf2sHiIOyxZt4aRo9Z98+yeWxa1cnm cefaHjaPzUvqPfq2rGL0+LxJzmPv598sARxRXDYpqTmZZalF+nYJXBmXDvewF6z2r1j0s4+x gfGYXRcjJ4eEgInE/L79bCC2kMBuRol33xIg4tIS1zdOYIewhSVW/nsOZHMB1TxnlGh83wHW wCagK7FjcRsbSEJEYAebRP+FI2AJZgFViTl/fjFDdDQxSSya/JkZJMEpYC+x5c9ysCJhgSiJ KY92sHQxcnCwADWs7ckDCfMKWEq8+9/HCGELSpyc+YQFYqa2RO/DVkYYe9nC18wQ1ylI/Hy6 jBXEFhFwk9hw/BATRI24xMujR9gnMArPQjJqFpJRs5CMmoWkZQEjyypGydSC4tz03GLDAsO8 1HK94sTc4tK8dL3k/NxNjOAI19Lcwbh91Qe9Q4xMHIyHGCU4mJVEeL/szkgS4k1JrKxKLcqP LyrNSS0+xCjNwaIkznuh62S8kEB6YklqdmpqQWoRTJaJg1OqgcnA9l/jBs1r885/iXxpVqhR nL05fb26+v9Z/Aa8cw7e2lO24MXJFwl3rjj92mhoaLv15q7YprD1+yRs5snf4H6/9X1V/75l 06VFSj7+Mrz1+C5fQMebfZoiiamsX47brDkyX8z+t35k7cV5KtPmzq8Sn5itsGPjUquAT7uX e/78WvJL4XbxHAXB+SEOs7OOBRs5LGK23fldqqlN4B3P+dIrQm5XjUTTFj1xUgxMuJwdm7l4 Y6t5+T0G59Xvvsq9X1Ex+TCXIouVr7vFhpoDf3ZPnCIR5vfn83pWdeHzpb9uPqzcvlzr0rd5 zTk9LyNb3eJeLl1fLuuastnhnNgz7iVtzUd+a2q+lrtT/HnayUMiSizFGYmGWsxFxYkAIY9x wV8DAAA= X-CMS-MailID: 20220428095533epcas5p3a4762efd30cb4116f245de161df25683 X-Msg-Generator: CA Content-Type: text/plain; charset="utf-8" CMS-TYPE: 105P DLP-Filter: Pass X-CFilter-Loop: Reflected X-CMS-RootMailID: 20220427160347eucas1p23ce51e0fb49160d437961d98fd682c28 References: <20220427155840.596535-1-krzysztof.kozlowski@linaro.org> <20220427155840.596535-9-krzysztof.kozlowski@linaro.org> <5eeac2a0-4293-675e-9dc2-25ed8ab3fb8f@samsung.com> Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org >-----Original Message----- >From: Marek Szyprowski =5Bmailto:m.szyprowski=40samsung.com=5D >Sent: Thursday, April 28, 2022 3:20 PM >To: Krzysztof Kozlowski ; Lee Jones >; Rob Herring ; Krzysztof >Kozlowski ; Alim Akhtar >; Dinh Nguyen ; Michal >Simek ; Liviu Dudau ; >Sudeep Holla ; Lorenzo Pieralisi >; Ray Jui ; Scott Brande= n >; Broadcom Kernel Team list=40broadcom.com>; Sylwester Nawrocki ; >devicetree=40vger.kernel.org; linux-arm-kernel=40lists.infradead.org; linu= x- >samsung-soc=40vger.kernel.org; linux-kernel=40vger.kernel.org >Cc: Rob Herring >Subject: Re: =5BPATCH 08/10=5D ARM: dts: exynos: use proper 'dma- >channels/requests' properties > >Hi Krzysztof, > >On 27.04.2022 17:58, Krzysztof Kozlowski wrote: >> pl330 DMA controller bindings documented 'dma-channels' and >> 'dma-requests' properties (without leading hash sign), so fix the DTS >> to match the bindings. >> >> Reported-by: Rob Herring >> Signed-off-by: Krzysztof Kozlowski > >Are those properties really needed for PL330 driver on Exynos SoCs? I've >removed them and I still see the proper values read from registers and >reported in the log (Exynos4210): > >dma-pl330 12680000.dma-controller: Loaded driver for PL330 DMAC-141330 >dma-pl330 12680000.dma-controller: DBUFF-32x4bytes Num_Chans-8 >Num_Peri-32 Num_Events-32 >dma-pl330 12690000.dma-controller: Loaded driver for PL330 DMAC-141330 >dma-pl330 12690000.dma-controller: DBUFF-32x4bytes Num_Chans-8 >Num_Peri-32 Num_Events-32 >dma-pl330 12850000.dma-controller: Loaded driver for PL330 DMAC-141330 >dma-pl330 12850000.dma-controller: DBUFF-64x8bytes Num_Chans-8 >Num_Peri-1 Num_Events-32 > >I also don't see any code that would read those properties. IMHO they shou= ld >be simply removed at all, at least for the PL330 related nodes. > I thought these series is correcting the DMA binding error, however is DMA = binding itself is broken then probably this need a relook.=20 >> --- >> arch/arm/boot/dts/exynos3250.dtsi =7C 8 ++++---- >> arch/arm/boot/dts/exynos4.dtsi =7C 12 +++++------ >> .../boot/dts/exynos4210-universal_c210.dts =7C 4 ++-- >> arch/arm/boot/dts/exynos5250.dtsi =7C 16 +++++++-------- >> arch/arm/boot/dts/exynos5410.dtsi =7C 8 ++++---- >> arch/arm/boot/dts/exynos5420.dtsi =7C 20 +++++++++--------= -- >> 6 files changed, 34 insertions(+), 34 deletions(-) >> >> diff --git a/arch/arm/boot/dts/exynos3250.dtsi >> b/arch/arm/boot/dts/exynos3250.dtsi >> index 41bb421e67c2..7bdd4f0782c3 100644 >> --- a/arch/arm/boot/dts/exynos3250.dtsi >> +++ b/arch/arm/boot/dts/exynos3250.dtsi >> =40=40 -429,8 +429,8 =40=40 pdma0: dma-controller=4012680000 =7B >> clocks =3D <&cmu CLK_PDMA0>; >> clock-names =3D =22apb_pclk=22; >> =23dma-cells =3D <1>; >> - =23dma-channels =3D <8>; >> - =23dma-requests =3D <32>; >> + dma-channels =3D <8>; >> + dma-requests =3D <32>; >> =7D; >> >> pdma1: dma-controller=4012690000 =7B >> =40=40 -440,8 +440,8 =40=40 pdma1: dma-controller=4012690000 =7B >> clocks =3D <&cmu CLK_PDMA1>; >> clock-names =3D =22apb_pclk=22; >> =23dma-cells =3D <1>; >> - =23dma-channels =3D <8>; >> - =23dma-requests =3D <32>; >> + dma-channels =3D <8>; >> + dma-requests =3D <32>; >> =7D; >> >> adc: adc=40126c0000 =7B >> diff --git a/arch/arm/boot/dts/exynos4.dtsi >> b/arch/arm/boot/dts/exynos4.dtsi index 5fd17bc52321..2a244aaf84b4 >> 100644 >> --- a/arch/arm/boot/dts/exynos4.dtsi >> +++ b/arch/arm/boot/dts/exynos4.dtsi >> =40=40 -676,8 +676,8 =40=40 pdma0: dma-controller=4012680000 =7B >> clocks =3D <&clock CLK_PDMA0>; >> clock-names =3D =22apb_pclk=22; >> =23dma-cells =3D <1>; >> - =23dma-channels =3D <8>; >> - =23dma-requests =3D <32>; >> + dma-channels =3D <8>; >> + dma-requests =3D <32>; >> =7D; >> >> pdma1: dma-controller=4012690000 =7B >> =40=40 -687,8 +687,8 =40=40 pdma1: dma-controller=4012690000 =7B >> clocks =3D <&clock CLK_PDMA1>; >> clock-names =3D =22apb_pclk=22; >> =23dma-cells =3D <1>; >> - =23dma-channels =3D <8>; >> - =23dma-requests =3D <32>; >> + dma-channels =3D <8>; >> + dma-requests =3D <32>; >> =7D; >> >> mdma1: dma-controller=4012850000 =7B >> =40=40 -698,8 +698,8 =40=40 mdma1: dma-controller=4012850000 =7B >> clocks =3D <&clock CLK_MDMA>; >> clock-names =3D =22apb_pclk=22; >> =23dma-cells =3D <1>; >> - =23dma-channels =3D <8>; >> - =23dma-requests =3D <1>; >> + dma-channels =3D <8>; >> + dma-requests =3D <1>; >> =7D; >> >> fimd: fimd=4011c00000 =7B >> diff --git a/arch/arm/boot/dts/exynos4210-universal_c210.dts >> b/arch/arm/boot/dts/exynos4210-universal_c210.dts >> index 138d606d58a5..c1b11704b8ee 100644 >> --- a/arch/arm/boot/dts/exynos4210-universal_c210.dts >> +++ b/arch/arm/boot/dts/exynos4210-universal_c210.dts >> =40=40 -666,8 +666,8 =40=40 mdma0: dma-controller=4012840000 =7B >> clocks =3D <&clock CLK_MDMA>; >> clock-names =3D =22apb_pclk=22; >> =23dma-cells =3D <1>; >> - =23dma-channels =3D <8>; >> - =23dma-requests =3D <1>; >> + dma-channels =3D <8>; >> + dma-requests =3D <1>; >> power-domains =3D <&pd_lcd0>; >> =7D; >> =7D; >> diff --git a/arch/arm/boot/dts/exynos5250.dtsi >> b/arch/arm/boot/dts/exynos5250.dtsi >> index df80ddfada2d..c4c0b4c08094 100644 >> --- a/arch/arm/boot/dts/exynos5250.dtsi >> +++ b/arch/arm/boot/dts/exynos5250.dtsi >> =40=40 -700,8 +700,8 =40=40 pdma0: dma-controller=40121a0000 =7B >> clocks =3D <&clock CLK_PDMA0>; >> clock-names =3D =22apb_pclk=22; >> =23dma-cells =3D <1>; >> - =23dma-channels =3D <8>; >> - =23dma-requests =3D <32>; >> + dma-channels =3D <8>; >> + dma-requests =3D <32>; >> =7D; >> >> pdma1: dma-controller=40121b0000 =7B >> =40=40 -711,8 +711,8 =40=40 pdma1: dma-controller=40121b0000 =7B >> clocks =3D <&clock CLK_PDMA1>; >> clock-names =3D =22apb_pclk=22; >> =23dma-cells =3D <1>; >> - =23dma-channels =3D <8>; >> - =23dma-requests =3D <32>; >> + dma-channels =3D <8>; >> + dma-requests =3D <32>; >> =7D; >> >> mdma0: dma-controller=4010800000 =7B >> =40=40 -722,8 +722,8 =40=40 mdma0: dma-controller=4010800000 =7B >> clocks =3D <&clock CLK_MDMA0>; >> clock-names =3D =22apb_pclk=22; >> =23dma-cells =3D <1>; >> - =23dma-channels =3D <8>; >> - =23dma-requests =3D <1>; >> + dma-channels =3D <8>; >> + dma-requests =3D <1>; >> =7D; >> >> mdma1: dma-controller=4011c10000 =7B >> =40=40 -733,8 +733,8 =40=40 mdma1: dma-controller=4011c10000 =7B >> clocks =3D <&clock CLK_MDMA1>; >> clock-names =3D =22apb_pclk=22; >> =23dma-cells =3D <1>; >> - =23dma-channels =3D <8>; >> - =23dma-requests =3D <1>; >> + dma-channels =3D <8>; >> + dma-requests =3D <1>; >> =7D; >> >> gsc_0: gsc=4013e00000 =7B >> diff --git a/arch/arm/boot/dts/exynos5410.dtsi >> b/arch/arm/boot/dts/exynos5410.dtsi >> index 4d797a9abba4..6dc08cb0622c 100644 >> --- a/arch/arm/boot/dts/exynos5410.dtsi >> +++ b/arch/arm/boot/dts/exynos5410.dtsi >> =40=40 -196,8 +196,8 =40=40 pdma0: dma-controller=40121a0000 =7B >> clocks =3D <&clock CLK_PDMA0>; >> clock-names =3D =22apb_pclk=22; >> =23dma-cells =3D <1>; >> - =23dma-channels =3D <8>; >> - =23dma-requests =3D <32>; >> + dma-channels =3D <8>; >> + dma-requests =3D <32>; >> =7D; >> >> pdma1: dma-controller=40121b0000 =7B >> =40=40 -207,8 +207,8 =40=40 pdma1: dma-controller=40121b0000 =7B >> clocks =3D <&clock CLK_PDMA1>; >> clock-names =3D =22apb_pclk=22; >> =23dma-cells =3D <1>; >> - =23dma-channels =3D <8>; >> - =23dma-requests =3D <32>; >> + dma-channels =3D <8>; >> + dma-requests =3D <32>; >> =7D; >> >> audi2s0: i2s=403830000 =7B >> diff --git a/arch/arm/boot/dts/exynos5420.dtsi >> b/arch/arm/boot/dts/exynos5420.dtsi >> index 21b608705049..08198d82ce8d 100644 >> --- a/arch/arm/boot/dts/exynos5420.dtsi >> +++ b/arch/arm/boot/dts/exynos5420.dtsi >> =40=40 -437,8 +437,8 =40=40 adma: dma-controller=403880000 =7B >> clocks =3D <&clock_audss EXYNOS_ADMA>; >> clock-names =3D =22apb_pclk=22; >> =23dma-cells =3D <1>; >> - =23dma-channels =3D <6>; >> - =23dma-requests =3D <16>; >> + dma-channels =3D <6>; >> + dma-requests =3D <16>; >> power-domains =3D <&mau_pd>; >> =7D; >> >> =40=40 -449,8 +449,8 =40=40 pdma0: dma-controller=40121a0000 =7B >> clocks =3D <&clock CLK_PDMA0>; >> clock-names =3D =22apb_pclk=22; >> =23dma-cells =3D <1>; >> - =23dma-channels =3D <8>; >> - =23dma-requests =3D <32>; >> + dma-channels =3D <8>; >> + dma-requests =3D <32>; >> =7D; >> >> pdma1: dma-controller=40121b0000 =7B >> =40=40 -460,8 +460,8 =40=40 pdma1: dma-controller=40121b0000 =7B >> clocks =3D <&clock CLK_PDMA1>; >> clock-names =3D =22apb_pclk=22; >> =23dma-cells =3D <1>; >> - =23dma-channels =3D <8>; >> - =23dma-requests =3D <32>; >> + dma-channels =3D <8>; >> + dma-requests =3D <32>; >> =7D; >> >> mdma0: dma-controller=4010800000 =7B >> =40=40 -471,8 +471,8 =40=40 mdma0: dma-controller=4010800000 =7B >> clocks =3D <&clock CLK_MDMA0>; >> clock-names =3D =22apb_pclk=22; >> =23dma-cells =3D <1>; >> - =23dma-channels =3D <8>; >> - =23dma-requests =3D <1>; >> + dma-channels =3D <8>; >> + dma-requests =3D <1>; >> =7D; >> >> mdma1: dma-controller=4011c10000 =7B >> =40=40 -482,8 +482,8 =40=40 mdma1: dma-controller=4011c10000 =7B >> clocks =3D <&clock CLK_MDMA1>; >> clock-names =3D =22apb_pclk=22; >> =23dma-cells =3D <1>; >> - =23dma-channels =3D <8>; >> - =23dma-requests =3D <1>; >> + dma-channels =3D <8>; >> + dma-requests =3D <1>; >> /* >> * MDMA1 can support both secure and non-secure >> * AXI transactions. When this is enabled in > >Best regards >-- >Marek Szyprowski, PhD >Samsung R&D Institute Poland