From patchwork Mon May 17 00:36:45 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kuninori Morimoto X-Patchwork-Id: 12260759 X-Patchwork-Delegate: geert@linux-m68k.org Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id AA06BC433ED for ; Mon, 17 May 2021 00:41:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 79ED661076 for ; Mon, 17 May 2021 00:41:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229624AbhEQAnH (ORCPT ); Sun, 16 May 2021 20:43:07 -0400 Received: from relmlor2.renesas.com ([210.160.252.172]:46840 "EHLO relmlie6.idc.renesas.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S229459AbhEQAnF (ORCPT ); Sun, 16 May 2021 20:43:05 -0400 Date: 17 May 2021 09:36:45 +0900 X-IronPort-AV: E=Sophos;i="5.82,306,1613401200"; d="scan'208";a="81299777" Received: from unknown (HELO relmlir6.idc.renesas.com) ([10.200.68.152]) by relmlie6.idc.renesas.com with ESMTP; 17 May 2021 09:36:45 +0900 Received: from mercury.renesas.com (unknown [10.166.252.133]) by relmlir6.idc.renesas.com (Postfix) with ESMTP id 83FC04142B9D; Mon, 17 May 2021 09:36:45 +0900 (JST) Message-ID: <87im3ici1u.wl-kuninori.morimoto.gx@renesas.com> From: Kuninori Morimoto Subject: [PATCH 1/3] clk: renesas: r8a77995: Add ZA2 clock User-Agent: Wanderlust/2.15.9 Emacs/26.3 Mule/6.0 To: Geert Uytterhoeven Cc: Magnus , linux-renesas-soc@vger.kernel.org, kazuya.mizuguchi.ks@renesas.com, yoshihiro.shimoda.uh@renesas.com, hoai.luu.ub@renesas.com, takeshi.kihara.df@renesas.com, harunobu.kurokawa.dn@renesas.com, khiem.nguyen.xt@renesas.com, hien.dang.eb@renesas.com In-Reply-To: <87k0nyci2t.wl-kuninori.morimoto.gx@renesas.com> References: <87k0nyci2t.wl-kuninori.morimoto.gx@renesas.com> MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Precedence: bulk List-ID: X-Mailing-List: linux-renesas-soc@vger.kernel.org From: Kuninori Morimoto Implement support for the ZA2 clock which is needed for R-Car Sound. Signed-off-by: Kuninori Morimoto --- drivers/clk/renesas/r8a77995-cpg-mssr.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/clk/renesas/r8a77995-cpg-mssr.c b/drivers/clk/renesas/r8a77995-cpg-mssr.c index 9cfd00cf4e69..8fb84ed6fe08 100644 --- a/drivers/clk/renesas/r8a77995-cpg-mssr.c +++ b/drivers/clk/renesas/r8a77995-cpg-mssr.c @@ -35,6 +35,7 @@ enum clk_ids { CLK_PLL0D2, CLK_PLL0D3, CLK_PLL0D5, + CLK_PLL0D24, CLK_PLL1D2, CLK_PE, CLK_S0, @@ -62,6 +63,7 @@ static const struct cpg_core_clk r8a77995_core_clks[] __initconst = { DEF_FIXED(".pll0d2", CLK_PLL0D2, CLK_PLL0, 2, 1), DEF_FIXED(".pll0d3", CLK_PLL0D3, CLK_PLL0, 3, 1), DEF_FIXED(".pll0d5", CLK_PLL0D5, CLK_PLL0, 5, 1), + DEF_FIXED(".pll0d24", CLK_PLL0D24, CLK_PLL0, 24, 1), DEF_FIXED(".pll1d2", CLK_PLL1D2, CLK_PLL1, 2, 1), DEF_FIXED(".pe", CLK_PE, CLK_PLL0D3, 4, 1), DEF_FIXED(".s0", CLK_S0, CLK_PLL1, 2, 1), @@ -75,6 +77,7 @@ static const struct cpg_core_clk r8a77995_core_clks[] __initconst = { DEF_RATE(".oco", CLK_OCO, 8 * 1000 * 1000), /* Core Clock Outputs */ + DEF_FIXED("za2", R8A77995_CLK_ZA2, CLK_PLL0D24, 1, 1), DEF_FIXED("z2", R8A77995_CLK_Z2, CLK_PLL0D3, 1, 1), DEF_FIXED("ztr", R8A77995_CLK_ZTR, CLK_PLL1, 6, 1), DEF_FIXED("zt", R8A77995_CLK_ZT, CLK_PLL1, 4, 1), From patchwork Mon May 17 00:36:55 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kuninori Morimoto X-Patchwork-Id: 12260753 X-Patchwork-Delegate: geert@linux-m68k.org Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 89460C433B4 for ; Mon, 17 May 2021 00:36:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5E74761028 for ; Mon, 17 May 2021 00:36:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229486AbhEQAiL (ORCPT ); Sun, 16 May 2021 20:38:11 -0400 Received: from relmlor1.renesas.com ([210.160.252.171]:39677 "EHLO relmlie5.idc.renesas.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S229459AbhEQAiL (ORCPT ); Sun, 16 May 2021 20:38:11 -0400 Date: 17 May 2021 09:36:55 +0900 X-IronPort-AV: E=Sophos;i="5.82,306,1613401200"; d="scan'208";a="81491290" Received: from unknown (HELO relmlir6.idc.renesas.com) ([10.200.68.152]) by relmlie5.idc.renesas.com with ESMTP; 17 May 2021 09:36:55 +0900 Received: from mercury.renesas.com (unknown [10.166.252.133]) by relmlir6.idc.renesas.com (Postfix) with ESMTP id 145564142B7C; Mon, 17 May 2021 09:36:55 +0900 (JST) Message-ID: <87h7j2ci1k.wl-kuninori.morimoto.gx@renesas.com> From: Kuninori Morimoto Subject: [PATCH 2/3] arm64: dts: renesas: r8a77995: add R-Car Sound support User-Agent: Wanderlust/2.15.9 Emacs/26.3 Mule/6.0 To: Geert Uytterhoeven Cc: Magnus , linux-renesas-soc@vger.kernel.org, kazuya.mizuguchi.ks@renesas.com, yoshihiro.shimoda.uh@renesas.com, hoai.luu.ub@renesas.com, takeshi.kihara.df@renesas.com, harunobu.kurokawa.dn@renesas.com, khiem.nguyen.xt@renesas.com, hien.dang.eb@renesas.com In-Reply-To: <87k0nyci2t.wl-kuninori.morimoto.gx@renesas.com> References: <87k0nyci2t.wl-kuninori.morimoto.gx@renesas.com> MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Precedence: bulk List-ID: X-Mailing-List: linux-renesas-soc@vger.kernel.org From: Kuninori Morimoto This patch adds R-Car Sound and Audio-DMAC support for D3. 1st note is that D3 doesn't have audio-clk-c, but is required from driver. This patch uses null-clk for it. 2nd note is that D3 has SSI3/4 and SRC5/6 only, but driver requres from SSI0/SRC0. This patch has disabled SSI/SRC for it. Signed-off-by: Kuninori Morimoto --- arch/arm64/boot/dts/renesas/r8a77995.dtsi | 176 ++++++++++++++++++++++ 1 file changed, 176 insertions(+) diff --git a/arch/arm64/boot/dts/renesas/r8a77995.dtsi b/arch/arm64/boot/dts/renesas/r8a77995.dtsi index 2319271c881b..0950f39711eb 100644 --- a/arch/arm64/boot/dts/renesas/r8a77995.dtsi +++ b/arch/arm64/boot/dts/renesas/r8a77995.dtsi @@ -43,6 +43,33 @@ L2_CA53: cache-controller-1 { }; }; + /* + * The external audio clocks are configured as 0 Hz fixed frequency + * clocks by default. + * Boards that provide audio clocks should override them. + */ + audio_clk_a: audio_clk_a { + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-frequency = <0>; + }; + + audio_clk_b: audio_clk_b { + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-frequency = <0>; + }; + + /* + * R8A77995 doesn't have audio_clk_c, * but is required from driver. + * Create NULL clock for it. + */ + null_clk: null_clk { + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-frequency = <0>; + }; + extal_clk: extal { compatible = "fixed-clock"; #clock-cells = <0>; @@ -642,6 +669,48 @@ dmac2: dma-controller@e7310000 { <&ipmmu_ds1 22>, <&ipmmu_ds1 23>; }; + audma0: dma-controller@ec700000 { + compatible = "renesas,dmac-r8a77995", + "renesas,rcar-dmac"; + reg = <0 0xec700000 0 0x10000>; + interrupts = , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + , + ; + interrupt-names = "error", + "ch0", "ch1", "ch2", "ch3", + "ch4", "ch5", "ch6", "ch7", + "ch8", "ch9", "ch10", "ch11", + "ch12", "ch13", "ch14", "ch15"; + clocks = <&cpg CPG_MOD 502>; + clock-names = "fck"; + power-domains = <&sysc R8A77995_PD_ALWAYS_ON>; + resets = <&cpg 502>; + #dma-cells = <1>; + dma-channels = <16>; + iommus = <&ipmmu_mp 0>, <&ipmmu_mp 1>, + <&ipmmu_mp 2>, <&ipmmu_mp 3>, + <&ipmmu_mp 4>, <&ipmmu_mp 5>, + <&ipmmu_mp 6>, <&ipmmu_mp 7>, + <&ipmmu_mp 8>, <&ipmmu_mp 9>, + <&ipmmu_mp 10>, <&ipmmu_mp 11>, + <&ipmmu_mp 12>, <&ipmmu_mp 13>, + <&ipmmu_mp 14>, <&ipmmu_mp 15>; + }; + ipmmu_ds0: iommu@e6740000 { compatible = "renesas,ipmmu-r8a77995"; reg = <0 0xe6740000 0 0x1000>; @@ -1258,6 +1327,113 @@ prr: chipid@fff00044 { compatible = "renesas,prr"; reg = <0 0xfff00044 0 4>; }; + + rcar_sound: sound@ec500000 { + /* + * #sound-dai-cells is required + * + * Single DAI : #sound-dai-cells = <0>; <&rcar_sound>; + * Multi DAI : #sound-dai-cells = <1>; <&rcar_sound N>; + */ + /* + * #clock-cells is required for audio_clkout0/1/2/3 + * + * clkout : #clock-cells = <0>; <&rcar_sound>; + * clkout0/1/2/3: #clock-cells = <1>; <&rcar_sound N>; + */ + compatible = "renesas,rcar_sound-r8a77995", "renesas,rcar_sound-gen3"; + reg = <0 0xec500000 0 0x1000>, /* SCU */ + <0 0xec5a0000 0 0x100>, /* ADG */ + <0 0xec540000 0 0x1000>, /* SSIU */ + <0 0xec541000 0 0x280>, /* SSI */ + <0 0xec740000 0 0x200>; /* Audio DMAC peri peri*/ + reg-names = "scu", "adg", "ssiu", "ssi", "audmapp"; + + clocks = <&cpg CPG_MOD 1005>, + <&cpg CPG_MOD 1011>, <&cpg CPG_MOD 1012>, + <&cpg CPG_MOD 1025>, <&cpg CPG_MOD 1026>, + <&cpg CPG_MOD 1020>, <&cpg CPG_MOD 1021>, + <&cpg CPG_MOD 1020>, <&cpg CPG_MOD 1021>, + <&cpg CPG_MOD 1019>, <&cpg CPG_MOD 1018>, + <&audio_clk_a>, <&audio_clk_b>, <&null_clk>, /* clk_c is NULL */ + <&cpg CPG_CORE R8A77995_CLK_ZA2>; + clock-names = "ssi-all", + "ssi.4", "ssi.3", + "src.6", "src.5", + "mix.1", "mix.0", + "ctu.1", "ctu.0", + "dvc.0", "dvc.1", + "clk_a", "clk_b", "clk_c", "clk_i"; /* clk_c is NULL */ + power-domains = <&sysc R8A77995_PD_ALWAYS_ON>; + resets = <&cpg 1005>, + <&cpg 1011>, <&cpg 1012>; + reset-names = "ssi-all", + "ssi.4", "ssi.3"; + status = "disabled"; + + rcar_sound,ctu { + ctu00: ctu-0 { }; + ctu01: ctu-1 { }; + ctu02: ctu-2 { }; + ctu03: ctu-3 { }; + ctu10: ctu-4 { }; + ctu11: ctu-5 { }; + ctu12: ctu-6 { }; + ctu13: ctu-7 { }; + }; + + rcar_sound,dvc { + dvc0: dvc-0 { + dmas = <&audma0 0xbc>; + dma-names = "tx"; + }; + dvc1: dvc-1 { + dmas = <&audma0 0xbe>; + dma-names = "tx"; + }; + }; + + rcar_sound,mix { + mix0: mix-0 { }; + mix1: mix-1 { }; + }; + + rcar_sound,src { + src0: src-0 { status = "disabled"; }; + src1: src-1 { status = "disabled"; }; + src2: src-2 { status = "disabled"; }; + src3: src-3 { status = "disabled"; }; + src4: src-4 { status = "disabled"; }; + src5: src-5 { + interrupts = ; + dmas = <&audma0 0x8f>, <&audma0 0xb2>; + dma-names = "rx", "tx"; + }; + src6: src-6 { + interrupts = ; + dmas = <&audma0 0x91>, <&audma0 0xb4>; + dma-names = "rx", "tx"; + }; + }; + + rcar_sound,ssi { + ssi0: ssi-0 { status = "disabled"; }; + ssi1: ssi-1 { status = "disabled"; }; + ssi2: ssi-2 { status = "disabled"; }; + ssi3: ssi-3 { + interrupts = ; + dmas = <&audma0 0x07>, <&audma0 0x08>, + <&audma0 0x6f>, <&audma0 0x70>; + dma-names = "rx", "tx", "rxu", "txu"; + }; + ssi4: ssi-4 { + interrupts = ; + dmas = <&audma0 0x09>, <&audma0 0x0a>, + <&audma0 0x71>, <&audma0 0x72>; + dma-names = "rx", "tx", "rxu", "txu"; + }; + }; + }; }; thermal-zones { From patchwork Mon May 17 00:37:02 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kuninori Morimoto X-Patchwork-Id: 12260755 X-Patchwork-Delegate: geert@linux-m68k.org Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5EA23C433B4 for ; Mon, 17 May 2021 00:37:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3451061090 for ; Mon, 17 May 2021 00:37:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229490AbhEQAiT (ORCPT ); Sun, 16 May 2021 20:38:19 -0400 Received: from relmlor1.renesas.com ([210.160.252.171]:49826 "EHLO relmlie5.idc.renesas.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S229459AbhEQAiS (ORCPT ); Sun, 16 May 2021 20:38:18 -0400 Date: 17 May 2021 09:37:02 +0900 X-IronPort-AV: E=Sophos;i="5.82,306,1613401200"; d="scan'208";a="81491312" Received: from unknown (HELO relmlir6.idc.renesas.com) ([10.200.68.152]) by relmlie5.idc.renesas.com with ESMTP; 17 May 2021 09:37:02 +0900 Received: from mercury.renesas.com (unknown [10.166.252.133]) by relmlir6.idc.renesas.com (Postfix) with ESMTP id 4FDFA4142DF9; Mon, 17 May 2021 09:37:02 +0900 (JST) Message-ID: <87fsymci1d.wl-kuninori.morimoto.gx@renesas.com> From: Kuninori Morimoto Subject: [PATCH 3/3] arm64: dts: renesas: r8a77995: draak: Add R-Car Sound support User-Agent: Wanderlust/2.15.9 Emacs/26.3 Mule/6.0 To: Geert Uytterhoeven Cc: Magnus , linux-renesas-soc@vger.kernel.org, kazuya.mizuguchi.ks@renesas.com, yoshihiro.shimoda.uh@renesas.com, hoai.luu.ub@renesas.com, takeshi.kihara.df@renesas.com, harunobu.kurokawa.dn@renesas.com, khiem.nguyen.xt@renesas.com, hien.dang.eb@renesas.com In-Reply-To: <87k0nyci2t.wl-kuninori.morimoto.gx@renesas.com> References: <87k0nyci2t.wl-kuninori.morimoto.gx@renesas.com> MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Precedence: bulk List-ID: X-Mailing-List: linux-renesas-soc@vger.kernel.org From: Kuninori Morimoto This patch adds R-Car Sound support for D3 draak. One note is that it is using different clock definition style from ulcb/salvator boards to avoid verbose clocks settings on rcar_sound node (see ulcb.dtsi rcar_sound::clocks). cs2000 and ADG are closs connected, and needs each other. ulcb/salvator boards assume drivers are probed cs2000 -> rcar_sound. This draak board assumes drivers are probed rcar_sound -> cs2000. Signed-off-by: Kuninori Morimoto --- .../arm64/boot/dts/renesas/r8a77995-draak.dts | 103 ++++++++++++++++++ 1 file changed, 103 insertions(+) diff --git a/arch/arm64/boot/dts/renesas/r8a77995-draak.dts b/arch/arm64/boot/dts/renesas/r8a77995-draak.dts index 6783c3ad0856..591fad289802 100644 --- a/arch/arm64/boot/dts/renesas/r8a77995-draak.dts +++ b/arch/arm64/boot/dts/renesas/r8a77995-draak.dts @@ -6,6 +6,11 @@ * Copyright (C) 2017 Glider bvba */ +/* + * This assumes... + * SW60 : 2-1 + */ + /dts-v1/; #include "r8a77995.dtsi" #include @@ -156,11 +161,25 @@ adv7123_out: endpoint { }; }; + sound_card: sound { + compatible = "audio-graph-card"; + + dais = <&rsnd_port0 /* ak4613 */ + /* HDMI is not yet supported */ + >; + }; + x12_clk: x12 { compatible = "fixed-clock"; #clock-cells = <0>; clock-frequency = <74250000>; }; + + x19_clk: x19 { + compatible = "fixed-clock"; + #clock-cells = <0>; + clock-frequency = <24576000>; + }; }; &avb { @@ -347,6 +366,39 @@ eeprom@50 { reg = <0x50>; pagesize = <8>; }; + + ak4613: codec@10 { + compatible = "asahi-kasei,ak4613"; + #sound-dai-cells = <0>; + reg = <0x10>; + clocks = <&rcar_sound 0>; /* audio_clkout */ + + asahi-kasei,in1-single-end; + asahi-kasei,in2-single-end; + asahi-kasei,out1-single-end; + asahi-kasei,out2-single-end; + asahi-kasei,out3-single-end; + asahi-kasei,out4-single-end; + asahi-kasei,out5-single-end; + asahi-kasei,out6-single-end; + + port { + ak4613_endpoint: endpoint { + remote-endpoint = <&rsnd_for_ak4613>; + }; + }; + }; + + cs2000: clk-multiplier@4f { + #clock-cells = <0>; + compatible = "cirrus,cs2000-cp"; + reg = <0x4f>; + clocks = <&rcar_sound 1>, <&x19_clk>; /* audio_clkout_1, x19 */ + clock-names = "clk_in", "ref_clk"; + + assigned-clocks = <&cs2000>; + assigned-clock-rates = <24576000>; /* 1/1 divide */ + }; }; &i2c1 { @@ -391,6 +443,46 @@ &ohci0 { status = "okay"; }; +&audio_clk_a { + /* same as cs2000 */ + clock-frequency = <24576000>; +}; + +&audio_clk_b { + clock-frequency = <22579200>; +}; + +&rcar_sound { + pinctrl-0 = <&sound_pins>, <&sound_clk_pins>; + pinctrl-names = "default"; + + /* Single DAI */ + #sound-dai-cells = <0>; + + /* audio_clkout0/1 */ + #clock-cells = <1>; + clock-frequency = <12288000 11289600>; + + status = "okay"; + + ports { + rsnd_port0: port { + rsnd_for_ak4613: endpoint { + remote-endpoint = <&ak4613_endpoint>; + dai-format = "left_j"; + bitclock-master = <&rsnd_for_ak4613>; + frame-master = <&rsnd_for_ak4613>; + playback = <&ssi3>, <&src5>, <&dvc0>; + capture = <&ssi4>, <&src6>, <&dvc1>; + }; + }; + }; +}; + +&ssi4 { + shared-pin; +}; + &pfc { avb0_pins: avb { groups = "avb0_link", "avb0_mdio", "avb0_mii"; @@ -449,6 +541,17 @@ sdhi2_pins_uhs: sd2_uhs { power-source = <1800>; }; + sound_pins: sound { + groups = "ssi34_ctrl", "ssi3_data", "ssi4_data_a"; + function = "ssi"; + }; + + sound_clk_pins: sound-clk { + groups = "audio_clk_a", "audio_clk_b", + "audio_clkout", "audio_clkout1"; + function = "audio_clk"; + }; + usb0_pins: usb0 { groups = "usb0"; function = "usb0";