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Wed, 18 Mar 2020 11:18:07 +0000 (GMT) From: Alim Akhtar To: robh+dt@kernel.org, devicetree@vger.kernel.org, linux-scsi@vger.kernel.org Cc: krzk@kernel.org, avri.altman@wdc.com, martin.petersen@oracle.com, kwmad.kim@samsung.com, stanley.chu@mediatek.com, cang@codeaurora.org, linux-samsung-soc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Alim Akhtar Subject: [PATCH v2 3/5] Documentation: devicetree: ufs: Add DT bindings for exynos UFS host controller Date: Wed, 18 Mar 2020 16:41:42 +0530 Message-Id: <20200318111144.39525-4-alim.akhtar@samsung.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200318111144.39525-1-alim.akhtar@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFprEKsWRmVeSWpSXmKPExsWy7bCmpm4Rc1GcwccmBYsH87axWbz8eZXN 4tP6ZawW84+cY7U4f34Du8XNLUdZLDY9vsZqcXnXHDaLGef3MVl0X9/BZrH8+D8mi9a9R9gt lm69yejA63G5r5fJY9OqTjaPzUvqPVpO7mfx+Pj0FotH35ZVjB6fN8l5tB/oZgrgiOKySUnN ySxLLdK3S+DK6H24n6Vgi3bF5B+nWRsYpyt1MXJySAiYSHxf8IWxi5GLQ0hgN6PEwZ+foZxP jBInL1xignC+MUqsmzWXDaZl8geYxF5GibZXG6FaWpgkNv9czwxSxSagLXF3+hYmEFtEIEDi 0vuDbCBFzALzmCQWPeoBSwgLZEjc/nYBrIFFQFViwdobLCA2r4CNxPOPl6DWyUus3nAArIZT wFbi791WsG0SAvfZJPZvfwBV5CKx+eMMFghbWOLV8S3sELaUxOd3e4FqOIDsbImeXcYQ4RqJ pfOOQZXbSxy4MocFpIRZQFNi/S59kDCzAJ9E7+8nTBCdvBIdbUIQ1aoSze+uQnVKS0zs7maF sD0kTu18xgIJhwmMEgt/vGKdwCg7C2HqAkbGVYySqQXFuempxaYFxnmp5XrFibnFpXnpesn5 uZsYwSlFy3sH46ZzPocYBTgYlXh4OTYUxAmxJpYVV+YeYpTgYFYS4V1cmB8nxJuSWFmVWpQf X1Sak1p8iFGag0VJnHcS69UYIYH0xJLU7NTUgtQimCwTB6dUA2OCC+fyxwe1NSe9XXnpg5Z+ h3OxuLzI1XanbJ/fmW4zdr4s7BcPq23zUou48i4iPEwp1X+Dyrs+6cIZr7h+f1GVif3YJ2yR 4nBv04ej784+7ZbcntK9UuT03K/6u1calL4zi9Pz/bz04LGT67e5/bD6u7C2JVNFpEqI/82P g+ezHmxkeXNh+xIlluKMREMt5qLiRAC2OfcvJQMAAA== X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFrrALMWRmVeSWpSXmKPExsWy7bCSvG4hc1GcwYnpKhYP5m1js3j58yqb xaf1y1gt5h85x2px/vwGdoubW46yWGx6fI3V4vKuOWwWM87vY7Lovr6DzWL58X9MFq17j7Bb LN16k9GB1+NyXy+Tx6ZVnWwem5fUe7Sc3M/i8fHpLRaPvi2rGD0+b5LzaD/QzRTAEcVlk5Ka k1mWWqRvl8CV0ftwP0vBFu2KyT9OszYwTlfqYuTkkBAwkZj84RITiC0ksJtR4tRaT4i4tMT1 jRPYIWxhiZX/ngPZXEA1TUwSS579ZANJsAloS9ydvgWsWUQgSOLemrWsIEXMAquYJDp7zzKC JIQF0iQOfrnIDGKzCKhKLFh7gwXE5hWwkXj+8RIbxAZ5idUbDoDVcArYSvy928oIcZGNxLHJ v1gmMPItYGRYxSiZWlCcm55bbFhgmJdarlecmFtcmpeul5yfu4kRHM5amjsYLy+JP8QowMGo xMObsKkgTog1say4MvcQowQHs5II7+LC/Dgh3pTEyqrUovz4otKc1OJDjNIcLErivE/zjkUK CaQnlqRmp6YWpBbBZJk4OKUaGOeXdtzUNijfXVb5ZdO6I1fcVS43hdrI8a5KmL/Xk32XRWBB 7e3FqluN/rzZ2rFCTO/Wt48tCbK9XyO5V69P1uKvfCCd6jXPabWxykfZ9Ap/x4UyN8WvKH1d uezPRpaMqMscJnvV1+6vP+kceG2zSmqVqcMnHtv/XJppqz+lKmqun+sZzSEXpsRSnJFoqMVc VJwIACwJcshjAgAA X-CMS-MailID: 20200318111809epcas5p37b33e3038ede4797c83682314afc683b X-Msg-Generator: CA CMS-TYPE: 105P X-CMS-RootMailID: 20200318111809epcas5p37b33e3038ede4797c83682314afc683b References: <20200318111144.39525-1-alim.akhtar@samsung.com> Sender: linux-samsung-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org This adds Exynos Universal Flash Storage (UFS) Host Controller DT bindings. Signed-off-by: Seungwon Jeon Signed-off-by: Alim Akhtar --- .../devicetree/bindings/ufs/ufs-exynos.txt | 104 ++++++++++++++++++ 1 file changed, 104 insertions(+) create mode 100644 Documentation/devicetree/bindings/ufs/ufs-exynos.txt diff --git a/Documentation/devicetree/bindings/ufs/ufs-exynos.txt b/Documentation/devicetree/bindings/ufs/ufs-exynos.txt new file mode 100644 index 000000000000..08e2d1497b1b --- /dev/null +++ b/Documentation/devicetree/bindings/ufs/ufs-exynos.txt @@ -0,0 +1,104 @@ +* Exynos Universal Flash Storage (UFS) Host Controller + +UFSHC nodes are defined to describe on-chip UFS host controllers. +Each UFS controller instance should have its own node. + +Required properties: +- compatible : compatible name, contains "samsung,exynos7-ufs" +- interrupts : +- reg : Should contain HCI, vendor specific, UNIPRO and + UFS protector address space +- reg-names : "hci", "vs_hci", "unipro", "ufsp"; + +Optional properties: +- vdd-hba-supply : phandle to UFS host controller supply regulator node +- vcc-supply : phandle to VCC supply regulator node +- vccq-supply : phandle to VCCQ supply regulator node +- vccq2-supply : phandle to VCCQ2 supply regulator node +- vcc-supply-1p8 : For embedded UFS devices, valid VCC range is 1.7-1.95V + or 2.7-3.6V. This boolean property when set, specifies + to use low voltage range of 1.7-1.95V. Note for external + UFS cards this property is invalid and valid VCC range is + always 2.7-3.6V. +- vcc-max-microamp : specifies max. load that can be drawn from vcc supply +- vccq-max-microamp : specifies max. load that can be drawn from vccq supply +- vccq2-max-microamp : specifies max. load that can be drawn from vccq2 supply +- -fixed-regulator : boolean property specifying that -supply is a fixed regulator + +- clocks : List of phandle and clock specifier pairs +- clock-names : List of clock input name strings sorted in the same + order as the clocks property. + "core", "sclk_unipro_main", "ref" and ref_parent + +- freq-table-hz : Array of operating frequencies stored in the same + order as the clocks property. If this property is not + defined or a value in the array is "0" then it is assumed + that the frequency is set by the parent clock or a + fixed rate clock source. +- pclk-freq-avail-range : specifies available frequency range(min/max) for APB clock +- ufs,pwr-attr-mode : specifies mode value for power mode change, possible values are + "FAST", "SLOW", "FAST_auto" and "SLOW_auto" +- ufs,pwr-attr-lane : specifies lane count value for power mode change + allowed values are 1 or 2 +- ufs,pwr-attr-gear : specifies gear count value for power mode change + allowed values are 1 or 2 +- ufs,pwr-attr-hs-series : specifies HS rate series for power mode change + can be one of "HS_rate_b" or "HS_rate_a" +- ufs,pwr-local-l2-timer : specifies array of local UNIPRO L2 timer values + 3 timers supported + +- ufs,pwr-remote-l2-timer : specifies array of remote UNIPRO L2 timer values + 3 timers supported + +- ufs-rx-adv-fine-gran-sup_en : specifies support of fine granularity of MPHY, + this is a boolean property. +- ufs-rx-adv-fine-gran-step : specifies granularity steps of MPHY, + allowed step size is 0 to 3 +- ufs-rx-adv-min-activate-time-cap : specifies rx advanced minimum activate time of MPHY + range is 1 to 9 +- ufs-pa-granularity : specifies Granularity for PA_TActivate and PA_Hibern8Time +- ufs-pa-tacctivate : specifies time to wake-up remote M-RX +- ufs-pa-hibern8time : specifies minimum time to wait in HIBERN8 state + +Note: If above properties are not defined it can be assumed that the supply +regulators or clocks are always on. + +Example: + ufshc@0x15570000 { + compatible = "samsung,exynos7-ufs"; + reg = <0x15570000 0x100>, + <0x15570100 0x100>, + <0x15571000 0x200>, + <0x15572000 0x300>; + reg-names = "hci", "vs_hci", "unipro", "ufsp"; + interrupts = <0 200 0>; + + vdd-hba-supply = <&xxx_reg0>; + vdd-hba-fixed-regulator; + vcc-supply = <&xxx_reg1>; + vcc-supply-1p8; + vccq-supply = <&xxx_reg2>; + vccq2-supply = <&xxx_reg3>; + vcc-max-microamp = 500000; + vccq-max-microamp = 200000; + vccq2-max-microamp = 200000; + + clocks = <&core 0>, <&ref 0>, <&iface 0>; + clock-names = "core", "sclk_unipro_main", "ref", "ref_parent"; + freq-table-hz = <100000000 200000000>, <0 0>, <0 0>, <0 0>; + + pclk-freq-avail-range = <70000000 133000000>; + + ufs,pwr-attr-mode = "FAST"; + ufs,pwr-attr-lane = <2>; + ufs,pwr-attr-gear = <2>; + ufs,pwr-attr-hs-series = "HS_rate_b"; + ufs,pwr-local-l2-timer = <8000 28000 20000>; + ufs,pwr-remote-l2-timer = <12000 32000 16000>; + ufs-rx-adv-fine-gran-sup_en = <1>; + ufs-rx-adv-fine-gran-step = <3>; + ufs-rx-adv-min-activate-time-cap = <9>; + ufs-pa-granularity = <6>; + ufs-pa-tacctivate = <6>; + ufs-pa-hibern8time = <20>; + };