From patchwork Thu Dec 12 08:59:47 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Crystal Guo X-Patchwork-Id: 13904862 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 3D61EE77180 for ; Thu, 12 Dec 2024 09:18:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Type: Content-Transfer-Encoding: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=CgQXnLuYZP9qq+qDcEvs7smqNEhL8gzcKfKL9qKTQmU=; b=iOI2HAdGoc2y2i+g4ruQkiDjrt NbpyLOnRYNn+qfdfWWlbgViRFzYNPkDjt4cIU9PItrFFjfHhwIO5TycA+dNL1If5nwL4N1X6L2ySg ywjdqQyUx2lr9bnzHUgPfEe/GiEDRZKmYF5t01BQLkQ1xE6yatRXA9oZrICtZ0nZkF2PbhJQ5tphe fIUeor9a1lah9nnovrzhJrfdRYRqvFqg7/gsZ1lrlB7sgioE2RPVctVWg4orwiR7uzD+jrLu1dB0Z 9JJodgcPn7gOr1Bg6ciFoTlr87hTRD4JdBD0vNhra5eGKYRRr5UHBEXdCyhQOTBmP5bEwBgZM0dbE gZosTv/Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tLfL0-0000000HSCD-16Zg; Thu, 12 Dec 2024 09:18:26 +0000 Received: from mailgw02.mediatek.com ([216.200.240.185]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tLfJA-0000000HRtQ-1LZp; Thu, 12 Dec 2024 09:16:33 +0000 X-UUID: 9b58bd60b86711ef9048ed6ed365623b-20241212 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Type:Content-Transfer-Encoding:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=CgQXnLuYZP9qq+qDcEvs7smqNEhL8gzcKfKL9qKTQmU=; b=hcgm2wZQ8mLwNq5F2EANfnyzXt3Lp52aOQnFOnNbWYv+OthErvm/HVUuy22YYm3HdeGq3M46NIIrIbnATDJUnsk6nzv/k8d5w4H206hoAZoy+FfElhOsLHp/Gu0JTs4p5P3jQ8lwZ/8N6RNrDF0N+GPOrG/Le2GZK3v/hAnttVQ=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.1.45,REQID:2bccf39b-b702-419b-9148-52aa767ed0f0,IP:0,U RL:0,TC:0,Content:-25,EDM:-25,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACT ION:release,TS:-50 X-CID-META: VersionHash:6493067,CLOUDID:00fd0413-8f5d-4ac6-9276-7b9691c7b8d6,B ulkID:nil,BulkQuantity:0,Recheck:0,SF:81|82|102,TC:nil,Content:0,EDM:1,IP: nil,URL:0,File:nil,RT:nil,Bulk:nil,QS:nil,BEC:nil,COL:0,OSI:0,OSA:0,AV:0,L ES:1,SPR:NO,DKR:0,DKP:0,BRR:0,BRE:0,ARC:0 X-CID-BVR: 0 X-CID-BAS: 0,_,0,_ X-CID-FACTOR: TF_CID_SPAM_SNR X-UUID: 9b58bd60b86711ef9048ed6ed365623b-20241212 Received: from mtkmbs09n1.mediatek.inc [(172.21.101.35)] by mailgw02.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 1122745954; Thu, 12 Dec 2024 02:00:59 -0700 Received: from mtkmbs11n2.mediatek.inc (172.21.101.187) by MTKMBS09N1.mediatek.inc (172.21.101.35) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.26; Thu, 12 Dec 2024 17:00:57 +0800 Received: from mhfsdcap04.gcn.mediatek.inc (10.17.3.154) by mtkmbs11n2.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.1118.26 via Frontend Transport; Thu, 12 Dec 2024 17:00:56 +0800 From: Crystal Guo To: Krzysztof Kozlowski , Rob Herring , Conor Dooley , Matthias Brugger , AngeloGioacchino Del Regno , Crystal Guo CC: , , , , Subject: [PATCH 1/2] memory/mediatek: Add an interface to get current DDR data rate Date: Thu, 12 Dec 2024 16:59:47 +0800 Message-ID: <20241212090029.13692-2-crystal.guo@mediatek.com> X-Mailer: git-send-email 2.46.0 In-Reply-To: <20241212090029.13692-1-crystal.guo@mediatek.com> References: <20241212090029.13692-1-crystal.guo@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-20241212_011632_360220_61A5480D X-CRM114-Status: GOOD ( 25.34 ) 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 Add MediaTek DRAMC driver to provide an interface that can obtain current DDR data rate. Signed-off-by: Crystal Guo --- drivers/memory/Kconfig | 1 + drivers/memory/Makefile | 1 + drivers/memory/mediatek/Kconfig | 21 ++ drivers/memory/mediatek/Makefile | 2 + drivers/memory/mediatek/mtk-dramc.c | 325 +++++++++++++++++++++++++ include/linux/soc/mediatek/mtk-dramc.h | 41 ++++ 6 files changed, 391 insertions(+) create mode 100644 drivers/memory/mediatek/Kconfig create mode 100644 drivers/memory/mediatek/Makefile create mode 100644 drivers/memory/mediatek/mtk-dramc.c create mode 100644 include/linux/soc/mediatek/mtk-dramc.h diff --git a/drivers/memory/Kconfig b/drivers/memory/Kconfig index c82d8d8a16ea..b1698549ff81 100644 --- a/drivers/memory/Kconfig +++ b/drivers/memory/Kconfig @@ -227,5 +227,6 @@ config STM32_FMC2_EBI source "drivers/memory/samsung/Kconfig" source "drivers/memory/tegra/Kconfig" +source "drivers/memory/mediatek/Kconfig" endif diff --git a/drivers/memory/Makefile b/drivers/memory/Makefile index d2e6ca9abbe0..cf1091449d2e 100644 --- a/drivers/memory/Makefile +++ b/drivers/memory/Makefile @@ -27,6 +27,7 @@ obj-$(CONFIG_STM32_FMC2_EBI) += stm32-fmc2-ebi.o obj-$(CONFIG_SAMSUNG_MC) += samsung/ obj-$(CONFIG_TEGRA_MC) += tegra/ +obj-$(CONFIG_HAVE_MTK_MC) += mediatek/ obj-$(CONFIG_TI_EMIF_SRAM) += ti-emif-sram.o obj-$(CONFIG_FPGA_DFL_EMIF) += dfl-emif.o diff --git a/drivers/memory/mediatek/Kconfig b/drivers/memory/mediatek/Kconfig new file mode 100644 index 000000000000..00764cdb157e --- /dev/null +++ b/drivers/memory/mediatek/Kconfig @@ -0,0 +1,21 @@ +# SPDX-License-Identifier: GPL-2.0-only +config HAVE_MTK_MC + bool "MediaTek Memory Controller support" + help + This option allows to enable MediaTek memory controller drivers, + which may include controllers for DRAM or others. + Select Y here if you need support for MediaTek memory controller. + If you don't need, select N. + +if HAVE_MTK_MC + +config MTK_DRAMC + tristate "MediaTek DRAMC driver" + depends on HAVE_MTK_MC + help + This option selects the MediaTek DRAMC driver, which provides + an interface for reporting the current data rate of DRAM. + Select Y here if you need support for the MediaTek DRAMC driver. + If you don't need, select N. + +endif diff --git a/drivers/memory/mediatek/Makefile b/drivers/memory/mediatek/Makefile new file mode 100644 index 000000000000..a1395fc55b41 --- /dev/null +++ b/drivers/memory/mediatek/Makefile @@ -0,0 +1,2 @@ +# SPDX-License-Identifier: GPL-2.0 +obj-$(CONFIG_MTK_DRAMC) += mtk-dramc.o diff --git a/drivers/memory/mediatek/mtk-dramc.c b/drivers/memory/mediatek/mtk-dramc.c new file mode 100644 index 000000000000..9c2c8e187a4a --- /dev/null +++ b/drivers/memory/mediatek/mtk-dramc.c @@ -0,0 +1,325 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2024 MediaTek Inc. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +static struct platform_device *dramc_pdev; +static struct platform_driver dramc_drv; + +static int fmeter_init(struct platform_device *pdev, + struct fmeter_dev_t *fmeter_dev_ptr, unsigned int fmeter_version) +{ + struct device_node *dramc_node = pdev->dev.of_node; + int ret; + + ret = of_property_read_u32(dramc_node, + "crystal-freq", &(fmeter_dev_ptr->crystal_freq)); + ret |= of_property_read_u32(dramc_node, + "shu-of", &(fmeter_dev_ptr->shu_of)); + ret |= of_property_read_u32_array(dramc_node, + "shu-lv", (unsigned int *)&(fmeter_dev_ptr->shu_lv), 3); + ret |= of_property_read_u32_array(dramc_node, + "pll-id", (unsigned int *)&(fmeter_dev_ptr->pll_id), 3); + ret |= of_property_read_u32_array(dramc_node, + "sdmpcw", (unsigned int *)(fmeter_dev_ptr->sdmpcw), 6); + ret |= of_property_read_u32_array(dramc_node, + "posdiv", (unsigned int *)(fmeter_dev_ptr->posdiv), 6); + ret |= of_property_read_u32_array(dramc_node, + "fbksel", (unsigned int *)(fmeter_dev_ptr->fbksel), 6); + ret |= of_property_read_u32_array(dramc_node, + "dqsopen", (unsigned int *)(fmeter_dev_ptr->dqsopen), 6); + if (fmeter_version == 1) { + fmeter_dev_ptr->version = 1; + ret |= of_property_read_u32_array(dramc_node, + "async-ca", (unsigned int *)(fmeter_dev_ptr->async_ca), 6); + ret |= of_property_read_u32_array(dramc_node, + "dq-ser-mode", (unsigned int *)(fmeter_dev_ptr->dq_ser_mode), 6); + } + return ret; +} + +static ssize_t dram_data_rate_show(struct device_driver *driver, char *buf) +{ + return snprintf(buf, PAGE_SIZE, "DRAM data rate = %d\n", + mtk_dramc_get_data_rate()); +} + +static DRIVER_ATTR_RO(dram_data_rate); + +static int dramc_probe(struct platform_device *pdev) +{ + struct device_node *dramc_node = pdev->dev.of_node; + struct dramc_dev_t *dramc_dev_ptr; + unsigned int fmeter_version; + struct resource *res; + unsigned int i, size; + int ret; + + pr_info("%s: module probe.\n", __func__); + dramc_pdev = pdev; + dramc_dev_ptr = devm_kmalloc(&pdev->dev, + sizeof(struct dramc_dev_t), GFP_KERNEL); + + if (!dramc_dev_ptr) + return -ENOMEM; + + ret = of_property_read_u32(dramc_node, + "support-ch-cnt", &dramc_dev_ptr->support_ch_cnt); + if (ret) { + pr_info("%s: get support_ch_cnt fail\n", __func__); + return -EINVAL; + } + + dramc_dev_ptr->sleep_base = of_iomap(dramc_node, + dramc_dev_ptr->support_ch_cnt * 4); + if (IS_ERR(dramc_dev_ptr->sleep_base)) { + pr_info("%s: unable to map sleep base\n", __func__); + return -EINVAL; + } + + size = sizeof(phys_addr_t) * dramc_dev_ptr->support_ch_cnt; + dramc_dev_ptr->dramc_chn_base_ao = devm_kmalloc(&pdev->dev, + size, GFP_KERNEL); + if (!(dramc_dev_ptr->dramc_chn_base_ao)) + return -ENOMEM; + dramc_dev_ptr->dramc_chn_base_nao = devm_kmalloc(&pdev->dev, + size, GFP_KERNEL); + if (!(dramc_dev_ptr->dramc_chn_base_nao)) + return -ENOMEM; + dramc_dev_ptr->ddrphy_chn_base_ao = devm_kmalloc(&pdev->dev, + size, GFP_KERNEL); + if (!(dramc_dev_ptr->ddrphy_chn_base_ao)) + return -ENOMEM; + dramc_dev_ptr->ddrphy_chn_base_nao = devm_kmalloc(&pdev->dev, + size, GFP_KERNEL); + if (!(dramc_dev_ptr->ddrphy_chn_base_nao)) + return -ENOMEM; + + for (i = 0; i < dramc_dev_ptr->support_ch_cnt; i++) { + res = platform_get_resource(pdev, IORESOURCE_MEM, i); + dramc_dev_ptr->dramc_chn_base_ao[i] = + devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(dramc_dev_ptr->dramc_chn_base_ao[i])) { + pr_info("%s: unable to map ch%d DRAMC AO base\n", + __func__, i); + return -EINVAL; + } + + res = platform_get_resource(pdev, IORESOURCE_MEM, + i + dramc_dev_ptr->support_ch_cnt); + dramc_dev_ptr->dramc_chn_base_nao[i] = + devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(dramc_dev_ptr->dramc_chn_base_nao[i])) { + pr_info("%s: unable to map ch%d DRAMC NAO base\n", + __func__, i); + return -EINVAL; + } + + res = platform_get_resource(pdev, IORESOURCE_MEM, + i + dramc_dev_ptr->support_ch_cnt * 2); + dramc_dev_ptr->ddrphy_chn_base_ao[i] = + devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(dramc_dev_ptr->ddrphy_chn_base_ao[i])) { + pr_info("%s: unable to map ch%d DDRPHY AO base\n", + __func__, i); + return -EINVAL; + } + + res = platform_get_resource(pdev, IORESOURCE_MEM, + i + dramc_dev_ptr->support_ch_cnt * 3); + dramc_dev_ptr->ddrphy_chn_base_nao[i] = + devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(dramc_dev_ptr->ddrphy_chn_base_nao[i])) { + pr_info("%s: unable to map ch%d DDRPHY NAO base\n", + __func__, i); + return -EINVAL; + } + } + + ret = of_property_read_u32(dramc_node, "fmeter-version", &fmeter_version); + if (ret) { + pr_info("%s: get fmeter_version fail\n", __func__); + return -EINVAL; + } + pr_info("%s: fmeter_version(%d)\n", __func__, fmeter_version); + + if (fmeter_version == 1) { + dramc_dev_ptr->fmeter_dev_ptr = devm_kmalloc(&pdev->dev, + sizeof(struct fmeter_dev_t), + GFP_KERNEL); + if (!(dramc_dev_ptr->fmeter_dev_ptr)) { + pr_info("%s: memory alloc fail\n", __func__); + return -ENOMEM; + } + ret = fmeter_init(pdev, dramc_dev_ptr->fmeter_dev_ptr, fmeter_version); + if (ret) { + pr_info("%s: fmeter_init fail\n", __func__); + return -EINVAL; + } + } else { + dramc_dev_ptr->fmeter_dev_ptr = NULL; + } + ret = driver_create_file(pdev->dev.driver, &driver_attr_dram_data_rate); + if (ret) { + pr_info("%s: fail to create dram_data_rate sysfs\n", __func__); + return ret; + } + + platform_set_drvdata(pdev, dramc_dev_ptr); + pr_info("%s: DRAM data rate = %d\n", __func__, + mtk_dramc_get_data_rate()); + + return ret; +} + +static unsigned int fmeter_v1(struct dramc_dev_t *dramc_dev_ptr) +{ + struct fmeter_dev_t *fmeter_dev_ptr = + (struct fmeter_dev_t *)dramc_dev_ptr->fmeter_dev_ptr; + unsigned int shu_lv_val; + unsigned int pll_id_val; + unsigned int sdmpcw_val; + unsigned int posdiv_val; + unsigned int ckdiv4_val; + unsigned int offset; + unsigned int vco_freq; + unsigned int fbksel; + unsigned int dqsopen; + unsigned int async_ca; + unsigned int dq_ser_mode; + + shu_lv_val = (readl(dramc_dev_ptr->ddrphy_chn_base_ao[0] + + fmeter_dev_ptr->shu_lv.offset) & + fmeter_dev_ptr->shu_lv.mask) >> + fmeter_dev_ptr->shu_lv.shift; + + pll_id_val = (readl(dramc_dev_ptr->ddrphy_chn_base_ao[0] + + fmeter_dev_ptr->pll_id.offset) & + fmeter_dev_ptr->pll_id.mask) >> + fmeter_dev_ptr->pll_id.shift; + + offset = fmeter_dev_ptr->sdmpcw[pll_id_val].offset + + fmeter_dev_ptr->shu_of * shu_lv_val; + sdmpcw_val = (readl(dramc_dev_ptr->ddrphy_chn_base_nao[0] + offset) & + fmeter_dev_ptr->sdmpcw[pll_id_val].mask) >> + fmeter_dev_ptr->sdmpcw[pll_id_val].shift; + + offset = fmeter_dev_ptr->posdiv[pll_id_val].offset + + fmeter_dev_ptr->shu_of * shu_lv_val; + posdiv_val = (readl(dramc_dev_ptr->ddrphy_chn_base_nao[0] + offset) & + fmeter_dev_ptr->posdiv[pll_id_val].mask) >> + fmeter_dev_ptr->posdiv[pll_id_val].shift; + + offset = fmeter_dev_ptr->fbksel[pll_id_val].offset + + fmeter_dev_ptr->shu_of * shu_lv_val; + fbksel = (readl(dramc_dev_ptr->ddrphy_chn_base_nao[0] + offset) & + fmeter_dev_ptr->fbksel[pll_id_val].mask) >> + fmeter_dev_ptr->fbksel[pll_id_val].shift; + + offset = fmeter_dev_ptr->dqsopen[pll_id_val].offset + + fmeter_dev_ptr->shu_of * shu_lv_val; + dqsopen = (readl(dramc_dev_ptr->ddrphy_chn_base_nao[0] + offset) & + fmeter_dev_ptr->dqsopen[pll_id_val].mask) >> + fmeter_dev_ptr->dqsopen[pll_id_val].shift; + + offset = fmeter_dev_ptr->async_ca[pll_id_val].offset + + fmeter_dev_ptr->shu_of * shu_lv_val; + async_ca = (readl(dramc_dev_ptr->ddrphy_chn_base_nao[0] + offset) & + fmeter_dev_ptr->async_ca[pll_id_val].mask) >> + fmeter_dev_ptr->async_ca[pll_id_val].shift; + + offset = fmeter_dev_ptr->dq_ser_mode[pll_id_val].offset + + fmeter_dev_ptr->shu_of * shu_lv_val; + dq_ser_mode = (readl(dramc_dev_ptr->ddrphy_chn_base_nao[0] + offset) & + fmeter_dev_ptr->dq_ser_mode[pll_id_val].mask) >> + fmeter_dev_ptr->dq_ser_mode[pll_id_val].shift; + ckdiv4_val = (dq_ser_mode == 1); // 1: DIV4, 2: DIV8, 3: DIV16 + + posdiv_val &= ~(0x4); + + vco_freq = ((fmeter_dev_ptr->crystal_freq) * + (sdmpcw_val >> 7)) >> posdiv_val >> 1 >> ckdiv4_val + << fbksel; + + if ((dqsopen == 1) && (async_ca == 1)) + vco_freq >>= 1; + + return vco_freq; +} + +/* + * mtk_dramc_get_data_rate - calculate DRAM data rate + * + * Returns DRAM data rate (MB/s) + */ +unsigned int mtk_dramc_get_data_rate(void) +{ + struct dramc_dev_t *dramc_dev_ptr; + struct fmeter_dev_t *fmeter_dev_ptr; + + if (!dramc_pdev) + return 0; + + dramc_dev_ptr = + (struct dramc_dev_t *)platform_get_drvdata(dramc_pdev); + + fmeter_dev_ptr = (struct fmeter_dev_t *)dramc_dev_ptr->fmeter_dev_ptr; + if (!fmeter_dev_ptr) + return 0; + + if (fmeter_dev_ptr->version == 1) + return fmeter_v1(dramc_dev_ptr); + return 0; +} +EXPORT_SYMBOL(mtk_dramc_get_data_rate); + +static int dramc_remove(struct platform_device *pdev) +{ + dramc_pdev = NULL; + + return 0; +} + +static const struct of_device_id dramc_of_ids[] = { + {.compatible = "mediatek,common-dramc",}, + {} +}; + +static struct platform_driver dramc_drv = { + .probe = dramc_probe, + .remove = dramc_remove, + .driver = { + .name = "dramc_drv", + .owner = THIS_MODULE, + .of_match_table = dramc_of_ids, + }, +}; + +static int __init dramc_drv_init(void) +{ + int ret; + + ret = platform_driver_register(&dramc_drv); + if (ret) { + pr_info("%s: init fail, ret 0x%x\n", __func__, ret); + return ret; + } + + return ret; +} + +module_init(dramc_drv_init); + +MODULE_AUTHOR("Mediatek Corporation"); +MODULE_DESCRIPTION("MediaTek DRAMC Driver"); +MODULE_LICENSE("GPL"); diff --git a/include/linux/soc/mediatek/mtk-dramc.h b/include/linux/soc/mediatek/mtk-dramc.h new file mode 100644 index 000000000000..95e7dbfe7d0e --- /dev/null +++ b/include/linux/soc/mediatek/mtk-dramc.h @@ -0,0 +1,41 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (c) 2019 MediaTek Inc. + */ + +#ifndef __MTK_DRAMC_H__ +#define __MTK_DRAMC_H__ + +struct reg_ctrl_t { + unsigned int offset; + unsigned int mask; + unsigned int shift; +}; + +struct fmeter_dev_t { + unsigned int version; + unsigned int crystal_freq; + unsigned int shu_of; + struct reg_ctrl_t shu_lv; + struct reg_ctrl_t pll_id; + struct reg_ctrl_t sdmpcw[2]; + struct reg_ctrl_t posdiv[2]; + struct reg_ctrl_t fbksel[2]; + struct reg_ctrl_t dqsopen[2]; + struct reg_ctrl_t async_ca[2]; + struct reg_ctrl_t dq_ser_mode[2]; +}; + +struct dramc_dev_t { + unsigned int support_ch_cnt; + void __iomem **dramc_chn_base_ao; + void __iomem **dramc_chn_base_nao; + void __iomem **ddrphy_chn_base_ao; + void __iomem **ddrphy_chn_base_nao; + void __iomem *sleep_base; + void *fmeter_dev_ptr; +}; + +unsigned int mtk_dramc_get_data_rate(void); + +#endif /* __MTK_DRAMC_H__ */