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Thu, 19 Mar 2020 15:07:05 +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 v3 3/5] Documentation: devicetree: ufs: Add DT bindings for exynos UFS host controller Date: Thu, 19 Mar 2020 20:30:29 +0530 Message-Id: <20200319150031.11024-4-alim.akhtar@samsung.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200319150031.11024-1-alim.akhtar@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFupjleLIzCtJLcpLzFFi42LZdlhTS3dOV3GcwRR2iwfztrFZvPx5lc3i 0/plrBbzj5xjtTh/fgO7xc0tR1ksNj2+xmpxedccNosZ5/cxWXRf38Fmsfz4PyaL1r1H2C2W br3J6MDrcbmvl8lj06pONo/NS+o9Wk7uZ/H4+PQWi0ffllWMHp83yXm0H+hmCuCI4rJJSc3J LEst0rdL4MrofbifpWCLdsXkH6dZGxinK3UxcnJICJhInOzYwtbFyMUhJLCbUeLf+jWMEM4n RonLcw6zQzjfGCWa9naywrS0LD3IBJHYyyhxa/4eqKoWJonF+5cxg1SxCWhL3J2+hQnEFhEI kLj0/iDYEmaBeUwSix71ACU4OIQFMiTuf5IBqWERUJW4/W0HWJhXwEai71EaxDJ5idUbDoCN 5BSwlZhz4ToLyBgJgcdsEufnN7NAFLlIfNj/nxHCFpZ4dXwLO4QtJfH53V42kJkSAtkSPbuM IcI1EkvnHYNqtZc4cGUOC0gJs4CmxPpd+iBhZgE+id7fT5ggOnklOtqEIKpVJZrfXYXqlJaY 2N0NDRIPiT/re8DiQgITGCW6f4ZOYJSdhTB0ASPjKkbJ1ILi3PTUYtMC47zUcr3ixNzi0rx0 veT83E2M4FSi5b2DcdM5n0OMAhyMSjy8M9qK44RYE8uKK3MPMUpwMCuJ8OqmA4V4UxIrq1KL 8uOLSnNSiw8xSnOwKInzTmK9GiMkkJ5YkpqdmlqQWgSTZeLglGpgtD7F0b0wINzWjHlarhHH Hv0vpwSMZQI4u701l+3gyZvfFJSVxLCA80M0h+W+p8H5Jy7YOdUE9nYtK2kS+R+/fP1frjOH Gdv5ftp/lnxolRnjYSQ47e/SI0WLXpx7/2LDTdNFoX4qc63e8AYU7rBaebdurrDz1ZIU5tVb iq5vPfpbQid3/fsFSizFGYmGWsxFxYkA/UynSCEDAAA= X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFrrALMWRmVeSWpSXmKPExsWy7bCSvO7sruI4g+WL5S0ezNvGZvHy51U2 i0/rl7FazD9yjtXi/PkN7BY3txxlsdj0+BqrxeVdc9gsZpzfx2TRfX0Hm8Xy4/+YLFr3HmG3 WLr1JqMDr8flvl4mj02rOtk8Ni+p92g5uZ/F4+PTWywefVtWMXp83iTn0X6gmymAI4rLJiU1 J7MstUjfLoEro/fhfpaCLdoVk3+cZm1gnK7UxcjJISFgItGy9CBTFyMXh5DAbkaJAz++sEIk pCWub5zADmELS6z895wdoqiJSWL13Q4WkASbgLbE3elbmEBsEYEgiXtr1rKCFDELrGKS6Ow9 ywiSEBZIk/gw4TxYA4uAqsTtbzuAGjg4eAVsJPoepUEskJdYveEAM4jNKWArMefCdbByIaCS zlfX2CYw8i1gZFjFKJlaUJybnltsWGCYl1quV5yYW1yal66XnJ+7iREczlqaOxgvL4k/xCjA wajEwzujrThOiDWxrLgy9xCjBAezkgivbjpQiDclsbIqtSg/vqg0J7X4EKM0B4uSOO/TvGOR QgLpiSWp2ampBalFMFkmDk6pBsaVv7sqNPRyBX9euH7q528e46M3eo88rCiaHRw7s+3L+2OP Ph27pijv+dGes6jTecMVDoaUf7Pfymk1bfJYN/MQq//d87NO16smyEbd8Cla5O6sPi1/Veh2 q1iWddbOylln/8Z628Wui15i97/zBafUsgd178NiLq4Rl80SP/q0JCFw/r/YNxxKLMUZiYZa zEXFiQBtGZmNYwIAAA== X-CMS-MailID: 20200319150707epcas5p12cd31988fe8d11357519ddaee1b98ef9 X-Msg-Generator: CA CMS-TYPE: 105P X-CMS-RootMailID: 20200319150707epcas5p12cd31988fe8d11357519ddaee1b98ef9 References: <20200319150031.11024-1-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>; + };