From patchwork Mon May 23 06:00:45 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?b?UmV4LUJDIENoZW4gKOmZs+afj+i+sCk=?= X-Patchwork-Id: 12858608 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 06EC0C433EF for ; Mon, 23 May 2022 08:53:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=c0FjrDkNUCpl42OCQi+z5TCOnGoZjEEOT+WVFo+b6KQ=; b=ixryekSo08oEGX lDS5wTO361laJQVGW50lnFnn01mgdVPgIazhB8f2t9vJG8EK5tOc2Qr1QnZ+xEqJtrEvAmuoRsdOL kKt2aV+QSRMErJAnhB33LCU8L2uRGwpPVsnp3GAERmhhjwTCNAp7LMp6dEQivMKfT0xatmgryHT5Y zYIgr7EaidhvNHuME5mh8UTZSYNBZ8WlhS0XSZhllZ/eIKnx/m3fVVCFaaiAgKuzH2s9MS25GDJeS uFAarql7do1S7HVlsydZ6WPScANEZyTlNqMXcDsrcOlO6JWu46xUPS/d8G3+Gv+YD8XZ+0AbUHUGw oZKR7XXRRVqlnaTC2G9g==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nt3op-002b28-Fo; Mon, 23 May 2022 08:53:39 +0000 Received: from desiato.infradead.org ([2001:8b0:10b:1:d65d:64ff:fe57:4e05]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nt2oX-002AAA-Td; Mon, 23 May 2022 07:49:18 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=Content-Transfer-Encoding:Content-Type :MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From: Sender:Reply-To:Content-ID:Content-Description; bh=de8ePvx5aFUeYhmDeAkAjHEpX10DNniLxjzXJ0aNJUI=; b=Id/YpgRhv8p6/oOu87BUfEtTMm dCWQ/aX11Rwgi1pjS3QDP5YSrqKtrpnJ/cwHRtw3jZzVBAHu6c1Cr1XlVhMnbRe5mmvB9HPpXjfL3 R/woTroAkvDE8oWXqcMwdja4e1aujnbVZ+czmp9smc86C7HLBbvb7uM3stlLoVQMMf7P7dOX3l+A/ BiFYWmZUa3fI84/P4xNzRalNlzK2R+/hJQLvtOz7qJYBmmW8eh8JtZHre5Ww/gMiex88N2B+n4WUl 8VlYuPZ1crxEZD3KlL1VybI9Z8gI0MG2wkX5O8+TuMUUbLUTPnrCDYLPZRgvm9rZfnhIVh6y2NidC lFlr59Pg==; Received: from mailgw01.mediatek.com ([216.200.240.184]) by desiato.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nt1Hp-000syU-CH; Mon, 23 May 2022 06:11:28 +0000 X-UUID: 610d4d3e0e0c42b2ac91e3b0ae2fa87e-20220522 X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.5, REQID:566a3017-660c-4ede-84d1-0543a4dd0b76, OB:0, LO B:0,IP:0,URL:0,TC:0,Content:-5,EDM:0,RT:0,SF:0,FILE:0,RULE:Release_Ham,ACT ION:release,TS:-5 X-CID-META: VersionHash:2a19b09, CLOUDID:24ff2ee3-edbf-4bd4-8a34-dfc5f7bb086d, C OID:IGNORED,Recheck:0,SF:nil,TC:nil,Content:0,EDM:-3,IP:nil,URL:0,File:nil ,QS:0,BEC:nil X-UUID: 610d4d3e0e0c42b2ac91e3b0ae2fa87e-20220522 Received: from mtkcas66.mediatek.inc [(172.29.193.44)] by mailgw01.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 520722940; Sun, 22 May 2022 23:10:52 -0700 Received: from MTKMBS07N2.mediatek.inc (172.21.101.141) by MTKMBS62N1.mediatek.inc (172.29.193.41) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Sun, 22 May 2022 23:01:00 -0700 Received: from mtkcas11.mediatek.inc (172.21.101.40) by mtkmbs07n2.mediatek.inc (172.21.101.141) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Mon, 23 May 2022 14:00:58 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkcas11.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Mon, 23 May 2022 14:00:58 +0800 From: Rex-BC Chen To: , , , , CC: , , , , , , , , , , , , Rex-BC Chen Subject: [PATCH v8 08/19] clk: mediatek: reset: Support inuput argument index mode Date: Mon, 23 May 2022 14:00:45 +0800 Message-ID: <20220523060056.24396-9-rex-bc.chen@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20220523060056.24396-1-rex-bc.chen@mediatek.com> References: <20220523060056.24396-1-rex-bc.chen@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220523_071126_548581_EBC71C31 X-CRM114-Status: GOOD ( 17.81 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org There is a large number of mediatek infra reset bits, but we do not use all of them. In addition, the proper input argement of reset controller soulde be index. Therefore, to be compatible with previous drivers and usage, we add description variables to store the ids which can mapping to index. To use this mode, we need to put the id in rst_idx_map to map from index to ids. For example, if we want to input index 1 (this index is used to set bank 1 bit 14) for svs, we need to declare the reset controller like this: In drivers: static u16 rst_ofs[] = { 0x120, 0x130, 0x140, 0x150, 0x730, }; static u16 rst_idx_map[] = { 0 * 32 + 0, 1 * 32 + 14, .... }; static const struct mtk_clk_rst_desc clk_rst_desc = { .version = MTK_RST_SET_CLR, .rst_bank_ofs = rst_ofs, .rst_bank_nr = ARRAY_SIZE(rst_ofs), .rst_idx_map = rst_idx_map, .rst_idx_map_nr = ARRAY_SIZE(rst_idx_map), }; In dts: svs: { ... resets = <&infra 1>; ... }; Signed-off-by: Rex-BC Chen Reviewed-by: AngeloGioacchino Del Regno Reviewed-by: Nícolas F. R. A. Prado Tested-by: Nícolas F. R. A. Prado --- drivers/clk/mediatek/reset.c | 21 ++++++++++++++++++++- drivers/clk/mediatek/reset.h | 5 +++++ 2 files changed, 25 insertions(+), 1 deletion(-) diff --git a/drivers/clk/mediatek/reset.c b/drivers/clk/mediatek/reset.c index 11b2f74f121d..89e617ea6393 100644 --- a/drivers/clk/mediatek/reset.c +++ b/drivers/clk/mediatek/reset.c @@ -98,6 +98,18 @@ static const struct reset_control_ops mtk_reset_ops_set_clr = { .reset = mtk_reset_set_clr, }; +static int reset_xlate(struct reset_controller_dev *rcdev, + const struct of_phandle_args *reset_spec) +{ + struct mtk_clk_rst_data *data = to_mtk_clk_rst_data(rcdev); + + if (reset_spec->args[0] >= rcdev->nr_resets || + reset_spec->args[0] >= data->desc->rst_idx_map_nr) + return -EINVAL; + + return data->desc->rst_idx_map[reset_spec->args[0]]; +} + void mtk_register_reset_controller(struct device_node *np, const struct mtk_clk_rst_desc *desc) { @@ -136,10 +148,17 @@ void mtk_register_reset_controller(struct device_node *np, data->desc = desc; data->regmap = regmap; data->rcdev.owner = THIS_MODULE; - data->rcdev.nr_resets = desc->rst_bank_nr * RST_NR_PER_BANK; data->rcdev.ops = rcops; data->rcdev.of_node = np; + if (data->desc->rst_idx_map_nr > 0) { + data->rcdev.of_reset_n_cells = 1; + data->rcdev.nr_resets = desc->rst_idx_map_nr; + data->rcdev.of_xlate = reset_xlate; + } else { + data->rcdev.nr_resets = desc->rst_bank_nr * RST_NR_PER_BANK; + } + ret = reset_controller_register(&data->rcdev); if (ret) { pr_err("could not register reset controller: %d\n", ret); diff --git a/drivers/clk/mediatek/reset.h b/drivers/clk/mediatek/reset.h index d991510ae2d8..cc847c67a2fc 100644 --- a/drivers/clk/mediatek/reset.h +++ b/drivers/clk/mediatek/reset.h @@ -28,11 +28,16 @@ enum mtk_reset_version { * @version: Reset version which is defined in enum mtk_reset_version. * @rst_bank_ofs: Pointer to an array containing base offsets of the reset register. * @rst_bank_nr: Quantity of reset bank. + * @rst_idx_map:Pointer to an array containing ids if input argument is index. + * This array is not necessary if our input argument does not mean index. + * @rst_idx_map_nr: Quantity of reset index map. */ struct mtk_clk_rst_desc { enum mtk_reset_version version; u16 *rst_bank_ofs; u32 rst_bank_nr; + u16 *rst_idx_map; + u32 rst_idx_map_nr; }; /**