From patchwork Mon Mar 25 12:19:07 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?b?WXUtY2hhbmcgTGVlICjmnY7nprnnkosp?= X-Patchwork-Id: 13601989 Received: from mailgw02.mediatek.com (unknown [210.61.82.184]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0B45713BACB; Mon, 25 Mar 2024 12:19:21 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=210.61.82.184 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711369166; cv=none; b=q0NkdGWpTe9XTTBrWHp27scG8SnPoXoVI7iCg6/oVIfB5f9hKFjGutwiA5GBZ90BBKK5C/0L+u8Rq2pDY1pOm1XEERe5NSAQEU0r10tLdcDRDy+KV7OJCTM9Ud5MeZ80hvnaRyffYqkRzl2FzonAKCXSYQ6LYtJ6uVMtNNgKjEc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1711369166; c=relaxed/simple; bh=AZDTzW+hgqFQO8ID7WPWerRy74pzzuTRiWKDiN96uU8=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=GVVt3JOrjhpz1PkXxEZrnswlGFb5hmHnqjI46VDdg7ZVoSWl6HiStD02IwB7CbrKfSatl/hwAofyCxwAq0MTlLN0RDfa/zErt22TzF306lYto4PY+dJs6vXVwtqe/MxfcrCu0eWpRlvVJJeLwi8ix0GSmxwmR9KgwrAQ7/1NaQk= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=mediatek.com; spf=pass smtp.mailfrom=mediatek.com; dkim=pass (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b=jOQnksIX; arc=none smtp.client-ip=210.61.82.184 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=mediatek.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=mediatek.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=mediatek.com header.i=@mediatek.com header.b="jOQnksIX" X-UUID: e6ac419aeaa111ee935d6952f98a51a9-20240325 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=C8MsNMAtgJ9u6U5BiH2pMWKJ+kiG/BS7o+mHTXW4has=; b=jOQnksIXfPli2rFoYtdt3Sv9HA77JV5fOPAvwaaBSUPv45NqdrCvehXen8EGE+7J5CTW6ckapJbh5l+hj+yTv6ae4cyX3K6b2rniqtDVgbSe5Yf9BP2TsTGwKjVM0z74/cUz07EpwM4Gm3Se8i5YMKdZ+OoBwLTk6rbj2GTc6PY=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.37,REQID:8e0fc45c-9759-4437-9d16-f22bba888790,IP:0,U RL:0,TC:0,Content:0,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTION: release,TS:0 X-CID-META: VersionHash:6f543d0,CLOUDID:e7466885-8d4f-477b-89d2-1e3bdbef96d1,B ulkID:nil,BulkQuantity:0,Recheck:0,SF:102,TC:nil,Content:0,EDM:-3,IP:nil,U RL:0,File:nil,RT:nil,Bulk:nil,QS:nil,BEC:nil,COL:0,OSI:0,OSA:0,AV:0,LES:1, SPR:NO,DKR:0,DKP:0,BRR:0,BRE:0 X-CID-BVR: 0 X-CID-BAS: 0,_,0,_ X-CID-FACTOR: TF_CID_SPAM_SNR X-UUID: e6ac419aeaa111ee935d6952f98a51a9-20240325 Received: from mtkmbs11n1.mediatek.inc [(172.21.101.185)] by mailgw02.mediatek.com (envelope-from ) (Generic MTA with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 334605122; Mon, 25 Mar 2024 20:19:17 +0800 Received: from mtkmbs11n2.mediatek.inc (172.21.101.187) by mtkmbs10n2.mediatek.inc (172.21.101.183) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.26; Mon, 25 Mar 2024 20:19:14 +0800 Received: from mtksdccf07.mediatek.inc (172.21.84.99) by mtkmbs11n2.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.1118.26 via Frontend Transport; Mon, 25 Mar 2024 20:19:14 +0800 From: yu-chang.lee To: Ulf Hansson , Matthias Brugger , AngeloGioacchino Del Regno CC: , , , , , , , , Subject: [PATCH 1/2] soc: mediatek: pm-domains: add smi_larb_reset function when power on Date: Mon, 25 Mar 2024 20:19:07 +0800 Message-ID: <20240325121908.3958-2-yu-chang.lee@mediatek.com> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20240325121908.3958-1-yu-chang.lee@mediatek.com> References: <20240325121908.3958-1-yu-chang.lee@mediatek.com> Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-TM-AS-Product-Ver: SMEX-14.0.0.3152-9.1.1006-23728.005 X-TM-AS-Result: No-10--5.880400-8.000000 X-TMASE-MatchedRID: IHaTRTQ81R3SuXLpNqOJSR+WEMjoO9WWTJDl9FKHbrkKogmGusPLb9ro EGQiudNyN/7rnrBxoxyzFPg/Y3uT4hHdGMlurS25JmbrB1j4XwoOPDBPSvoRdDuM/8xRTTt71/H hkIjNCSaZ2BL2I+8mdgpVS+XW10LYBLIUC3yGa8rhuXUWQoMQt30tCKdnhB589yM15V5aWpj6C0 ePs7A07YFInLyeDAoZeviCfOt7+0FMqhlMe0WRKqx4G8Mbv7n+wERbNIEV3QrxkYBDy4DNFQ== X-TM-AS-User-Approved-Sender: No X-TM-AS-User-Blocked-Sender: No X-TMASE-Result: 10--5.880400-8.000000 X-TMASE-Version: SMEX-14.0.0.3152-9.1.1006-23728.005 X-TM-SNTS-SMTP: 5C20DC049524DA4B3A26E462ADE1E51C709A56F5AAA495AF896EF017A130FFA42000:8 X-MTK: N This patch avoid mtcmos power glitch from happening by set and clear smi larb reset. Signed-off-by: yu-chang.lee --- drivers/pmdomain/mediatek/mt8188-pm-domains.h | 28 +++++++++ drivers/pmdomain/mediatek/mtk-pm-domains.c | 59 +++++++++++++++++++ drivers/pmdomain/mediatek/mtk-pm-domains.h | 12 ++++ 3 files changed, 99 insertions(+) diff --git a/drivers/pmdomain/mediatek/mt8188-pm-domains.h b/drivers/pmdomain/mediatek/mt8188-pm-domains.h index 06834ab6597c..7bbba4d56a77 100644 --- a/drivers/pmdomain/mediatek/mt8188-pm-domains.h +++ b/drivers/pmdomain/mediatek/mt8188-pm-domains.h @@ -573,6 +573,18 @@ static const struct scpsys_domain_data scpsys_domain_data_mt8188[] = { .pwr_sta2nd_offs = 0x170, .sram_pdn_bits = BIT(8), .sram_pdn_ack_bits = BIT(12), + .reset_smi = { + SMI_RESET_WR(MT8188_SMI_LARB10_RESET, + MT8188_SMI_LARB10_RESET_ADDR), + SMI_RESET_WR(MT8188_SMI_LARB11A_RESET, + MT8188_SMI_LARB11A_RESET_ADDR), + SMI_RESET_WR(MT8188_SMI_LARB11C_RESET, + MT8188_SMI_LARB11C_RESET_ADDR), + SMI_RESET_WR(MT8188_SMI_LARB11B_RESET, + MT8188_SMI_LARB11B_RESET_ADDR), + SMI_RESET_WR(MT8188_SMI_LARB15_RESET, + MT8188_SMI_LARB15_RESET_ADDR), + }, .caps = MTK_SCPD_KEEP_DEFAULT_OFF, }, [MT8188_POWER_DOMAIN_IPE] = { @@ -583,6 +595,10 @@ static const struct scpsys_domain_data scpsys_domain_data_mt8188[] = { .pwr_sta2nd_offs = 0x170, .sram_pdn_bits = BIT(8), .sram_pdn_ack_bits = BIT(12), + .reset_smi = { + SMI_RESET_WR(MT8188_SMI_LARB12_RESET, + MT8188_SMI_LARB12_RESET_ADDR), + }, .caps = MTK_SCPD_KEEP_DEFAULT_OFF, }, [MT8188_POWER_DOMAIN_CAM_VCORE] = { @@ -660,6 +676,12 @@ static const struct scpsys_domain_data scpsys_domain_data_mt8188[] = { .pwr_sta2nd_offs = 0x170, .sram_pdn_bits = BIT(8), .sram_pdn_ack_bits = BIT(12), + .reset_smi = { + SMI_RESET_WR(MT8188_SMI_LARB16A_RESET, + MT8188_SMI_LARB16A_RESET_ADDR), + SMI_RESET_WR(MT8188_SMI_LARB17A_RESET, + MT8188_SMI_LARB17A_RESET_ADDR), + }, .caps = MTK_SCPD_KEEP_DEFAULT_OFF, }, [MT8188_POWER_DOMAIN_CAM_SUBB] = { @@ -670,6 +692,12 @@ static const struct scpsys_domain_data scpsys_domain_data_mt8188[] = { .pwr_sta2nd_offs = 0x170, .sram_pdn_bits = BIT(8), .sram_pdn_ack_bits = BIT(12), + .reset_smi = { + SMI_RESET_WR(MT8188_SMI_LARB16B_RESET, + MT8188_SMI_LARB16B_RESET_ADDR), + SMI_RESET_WR(MT8188_SMI_LARB17B_RESET, + MT8188_SMI_LARB17B_RESET_ADDR), + }, .caps = MTK_SCPD_KEEP_DEFAULT_OFF, }, }; diff --git a/drivers/pmdomain/mediatek/mtk-pm-domains.c b/drivers/pmdomain/mediatek/mtk-pm-domains.c index e274e3315fe7..9ab6fa105c8c 100644 --- a/drivers/pmdomain/mediatek/mtk-pm-domains.c +++ b/drivers/pmdomain/mediatek/mtk-pm-domains.c @@ -48,6 +48,8 @@ struct scpsys_domain { struct regmap *infracfg_nao; struct regmap *infracfg; struct regmap *smi; + struct regmap **larb; + int num_larb; struct regulator *supply; }; @@ -230,6 +232,39 @@ static int scpsys_regulator_disable(struct regulator *supply) return supply ? regulator_disable(supply) : 0; } +static int _scpsys_smi_larb_reset(const struct smi_reset_data bpd, + struct regmap *regmap) +{ + int ret; + u32 mask = bpd.smi_reset_mask; + + if (!mask) + return 0; + + ret = regmap_set_bits(regmap, bpd.smi_reset_addr, mask); + if (ret) + return ret; + + ret = regmap_clear_bits(regmap, bpd.smi_reset_addr, mask); + if (ret) + return ret; + + return 0; +} + +static int scpsys_smi_larb_reset(struct scpsys_domain *pd) +{ + int ret, i; + + for (i = 0; i < pd->num_larb; i++) { + ret = _scpsys_smi_larb_reset(pd->data->reset_smi[i], pd->larb[i]); + if (ret) + return ret; + } + + return 0; +} + static int scpsys_power_on(struct generic_pm_domain *genpd) { struct scpsys_domain *pd = container_of(genpd, struct scpsys_domain, genpd); @@ -279,6 +314,10 @@ static int scpsys_power_on(struct generic_pm_domain *genpd) if (ret < 0) goto err_disable_subsys_clks; + ret = scpsys_smi_larb_reset(pd); + if (ret < 0) + goto err_disable_subsys_clks; + ret = scpsys_bus_protect_disable(pd); if (ret < 0) goto err_disable_sram; @@ -355,6 +394,7 @@ generic_pm_domain *scpsys_add_one_domain(struct scpsys *scpsys, struct device_no struct scpsys_domain *pd; struct device_node *root_node = scpsys->dev->of_node; struct device_node *smi_node; + struct device_node *larb_node; struct property *prop; const char *clk_name; int i, ret, num_clks; @@ -418,6 +458,25 @@ generic_pm_domain *scpsys_add_one_domain(struct scpsys *scpsys, struct device_no return ERR_CAST(pd->smi); } + pd->num_larb = of_count_phandle_with_args(node, "mediatek,larb", NULL); + if (pd->num_larb > 0) { + pd->larb = devm_kcalloc(scpsys->dev, pd->num_larb, sizeof(*pd->larb), GFP_KERNEL); + if (!pd->larb) + return ERR_PTR(-ENOMEM); + + for (i = 0; i < pd->num_larb; i++) { + larb_node = of_parse_phandle(node, "mediatek,larb", i); + if (!larb_node) + return ERR_PTR(-EINVAL); + + pd->larb[i] = device_node_to_regmap(larb_node); + if (IS_ERR(pd->larb[i])) + return ERR_CAST(pd->larb[i]); + } + } else { + pd->num_larb = 0; + } + if (MTK_SCPD_CAPS(pd, MTK_SCPD_HAS_INFRA_NAO)) { pd->infracfg_nao = syscon_regmap_lookup_by_phandle(node, "mediatek,infracfg-nao"); if (IS_ERR(pd->infracfg_nao)) diff --git a/drivers/pmdomain/mediatek/mtk-pm-domains.h b/drivers/pmdomain/mediatek/mtk-pm-domains.h index aaba5e6b0536..31c2a1bb500f 100644 --- a/drivers/pmdomain/mediatek/mtk-pm-domains.h +++ b/drivers/pmdomain/mediatek/mtk-pm-domains.h @@ -43,6 +43,7 @@ #define PWR_STATUS_USB BIT(25) #define SPM_MAX_BUS_PROT_DATA 6 +#define SPM_MAX_SMI_RESET_DATA 6 enum scpsys_bus_prot_flags { BUS_PROT_REG_UPDATE = BIT(1), @@ -79,6 +80,16 @@ enum scpsys_bus_prot_flags { INFRA_TOPAXI_PROTECTEN, \ INFRA_TOPAXI_PROTECTSTA1) +#define SMI_RESET_WR(_mask, _addr) { \ + .smi_reset_mask = (_mask), \ + .smi_reset_addr = _addr, \ + } + +struct smi_reset_data { + u32 smi_reset_mask; + u32 smi_reset_addr; +}; + struct scpsys_bus_prot_data { u32 bus_prot_set_clr_mask; u32 bus_prot_set; @@ -110,6 +121,7 @@ struct scpsys_domain_data { u32 ext_buck_iso_mask; u16 caps; const struct scpsys_bus_prot_data bp_cfg[SPM_MAX_BUS_PROT_DATA]; + const struct smi_reset_data reset_smi[SPM_MAX_SMI_RESET_DATA]; int pwr_sta_offs; int pwr_sta2nd_offs; };