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Fri, 6 Sep 2019 10:14:06 +0000 (GMT) From: Lukasz Luba To: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-arm-kernel@lists.infradead.org Cc: b.zolnierkie@samsung.com, krzk@kernel.org, kgene@kernel.org, mark.rutland@arm.com, robh+dt@kernel.org, cw00.choi@samsung.com, kyungmin.park@samsung.com, m.szyprowski@samsung.com, s.nawrocki@samsung.com, myungjoo.ham@samsung.com, willy.mh.wolff.ml@gmail.com, Lukasz Luba Subject: [PATCH 3/3] dt-bindings: ddr: Add bindings for Samsung LPDDR3 memories Date: Fri, 6 Sep 2019 12:13:44 +0200 Message-Id: <20190906101344.3535-4-l.luba@partner.samsung.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190906101344.3535-1-l.luba@partner.samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA0WSe1BMYRjGfXvO2XNqbL5Wo3cqmlmMW7qMy3yqcRmXOaNh9IcxI4ZVRzUq 2zlFYVi5N8KsySWJblPWEqtpSC3VTiFsGIqtJnZMLiG2Iky0zuK/3/u8z/O977zzcZS6kvHj ElPSBDFFm6RRetJVjYMPp+vCxLWhJUYvcvVUBUNa+7oZcs76kCFHHe8pYrNdYcmDrB6WvNAH ELPjGUOeVOcriTPHisgpm0VBLlk7WFLa+khB7LvLlWRfrZUlDT0HGDJw5xWa782bCkyIv5HX wfJm4yElf61kF1/3sUbBH6k0It5pHreCXe0ZGSckJW4RxJC56z0THPbvCl0RzqjtPEPpUb0q G3lwgGeC/e1lRTby5NS4HEHXUBMjF30ITpi+UnLhRFBeWMT8jZSettJyowxBtsWA/kVM9qrh CMcpcTBcN6a6Aj64GMFAw2oXU7hKATn9AS4ejaMhN7eOdTGNJ8I3cxHtYhWeC4PX3tDysEC4 eOU25WIPPA8MFbl/BgNuZKF4+GCyaRH02mxI5tHwrqmSlTkAmo8fdj8kgT6n0O3ZAY6jZ92e CGhoesS4dqbwFKioDpHlBfArz6B0yYC9oO2Dt7y+FxiqTlKyrIKD+9WyezJUHm5RyDwGykwn 3I/z0Hn/gvs6BgRDzU72GArM+z/sPEJG5CukS8nxghSWImwNlrTJUnpKfHDs5mQzGv5LzUNN X66j/scb6hHmkGakCvfp1qoZ7RYpM7keAUdpfFQVV4clVZw2c5sgbl4npicJUj3y52iNr2r7 iK4YNY7XpgmbBEEniH+7Cs7DT492Wp5PwlGT21bdWzItfHz0Qj48RwwZFPljHpaMzsD27peO 9vPSA1Xc0sHo3qJDWRuooHyNfmH14tabT6Occz6t9P/8FOtPtliCSuypNc7IH3V3dSHxt4wr XtPFyxNnjNqIZsXEzI5MjU2K+Fm8rOB4C1kzNnSNcU/2bHrvBAOdF6yhpQRt2FRKlLS/AVO/ 2OdHAwAA X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFprBIsWRmVeSWpSXmKPExsVy+t/xu7r5hkWxBhMvsFhsnLGe1eL6l+es FvOPnGO16H/8mtni/PkN7BZnm96wW9xqkLHY9Pgaq8XlXXPYLD73HmG0mHF+H5PF2iN32S2W Xr/IZHG7cQWbReveI+wWh9+0s1p8O/GI0UHQY828NYweO2fdZffYtKqTzWPzknqPg+/2MHn0 bVnF6PF5k1wAe5SeTVF+aUmqQkZ+cYmtUrShhZGeoaWFnpGJpZ6hsXmslZGpkr6dTUpqTmZZ apG+XYJexuPbv5gKFglU7L03m7mB8RBvFyMnh4SAicTSmUdYuhi5OIQEljJK7Jn8mQUiISYx ad92dghbWOLPtS42iKJPjBI7pnQzdjFycLAJ6EnsWFUIEhcRWM4ocWzVW2YQh1ngCJNE/655 rCDdwgL+Elfm/WQGsVkEVCV+bFoEtoFXwE7i5+YXUNvkJVZvOABWwylgLzFp/VSwuBBQza4p nSwTGPkWMDKsYhRJLS3OTc8tNtQrTswtLs1L10vOz93ECIyVbcd+bt7BeGlj8CFGAQ5GJR5e gS8FsUKsiWXFlbmHGCU4mJVEeNdvBArxpiRWVqUW5ccXleakFh9iNAU6aiKzlGhyPjCO80ri DU0NzS0sDc2NzY3NLJTEeTsEDsYICaQnlqRmp6YWpBbB9DFxcEo1MBZ2dDVv8wrpsbb03P79 molSXODx7mSrXvaSBtdDS94YZjyoCIzw/X9uZd++4K+LHH5uOfv8o+9j1rcZDudPrw9/U1yo riL6fkXlra/b9oUoTngrJ2LC/WZmUHqI6PaP7zl6Xzi2lffdefcup1XX706Yz10vrdmeJa7f 3u92LDaKuKc1T/TkQiWW4oxEQy3mouJEAAynBn+rAgAA X-CMS-MailID: 20190906101407eucas1p15eb0df53374b27497b4793eab24becf6 X-Msg-Generator: CA X-RootMTR: 20190906101407eucas1p15eb0df53374b27497b4793eab24becf6 X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20190906101407eucas1p15eb0df53374b27497b4793eab24becf6 References: <20190906101344.3535-1-l.luba@partner.samsung.com> Sender: linux-samsung-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org Add description of bindings for Samsung k3qf2f20db LPDDR3 memory. Minor fixes in the old documentation. Signed-off-by: Lukasz Luba --- .../devicetree/bindings/ddr/lpddr3.txt | 29 +++++++++++++++++-- 1 file changed, 27 insertions(+), 2 deletions(-) diff --git a/Documentation/devicetree/bindings/ddr/lpddr3.txt b/Documentation/devicetree/bindings/ddr/lpddr3.txt index 3b2485b84b3f..de0905239767 100644 --- a/Documentation/devicetree/bindings/ddr/lpddr3.txt +++ b/Documentation/devicetree/bindings/ddr/lpddr3.txt @@ -40,10 +40,34 @@ Child nodes: a given speed-bin. Please see Documentation/devicetree/ bindings/ddr/lpddr3-timings.txt for more information on "lpddr3-timings" +Samsung K3QF2F20DB LPDDR3 memory +------------------------------------------------------------ + +This binding uses the LPDDR3 binding (described above) + +Required properties: +- compatible: Should be: + "samsung,K3QF2F20DB" + followed by "jedec,lpddr3" +- density : representing density in Mb (Mega bits) +- io-width : representing bus width. Possible value 32 +- #address-cells: Must be set to 1 +- #size-cells: Must be set to 0 + +Optional properties: + +The optional properties are the same as in the LPDDR3 generic bindings and +values should be taken from the data-sheet. Detailed bindings are described +above. + +Child nodes: + +Detailed bindings are described in LPDDR3 generic bindings described above. + Example: samsung_K3QF2F20DB: lpddr3 { - compatible = "Samsung,K3QF2F20DB", "jedec,lpddr3"; + compatible = "samsung,K3QF2F20DB", "jedec,lpddr3"; density = <16384>; io-width = <32>; #address-cells = <1>; @@ -73,7 +97,8 @@ samsung_K3QF2F20DB: lpddr3 { timings_samsung_K3QF2F20DB_800mhz: lpddr3-timings@800000000 { compatible = "jedec,lpddr3-timings"; - reg = <800000000>; /* workaround: it shows max-freq */ + /* workaround: 'reg' shows max-freq */ + reg = <800000000>; min-freq = <100000000>; tRFC = <65000>; tRRD = <6000>;