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Fri, 11 Feb 2022 18:18:41 +0000 Received: from localhost.localdomain (unknown [192.168.72.32]) by proxy.softathome.com (Postfix) with ESMTPSA id 008CB1FFF4; Fri, 11 Feb 2022 19:18:40 +0100 (CET) From: Philippe Reynes To: u-boot@lists.denx.de Cc: Philippe Reynes Subject: [PATCH 3/5] nand: brcmnand: add bcm6753 support Date: Fri, 11 Feb 2022 19:18:36 +0100 Message-Id: <20220211181838.20152-3-philippe.reynes@softathome.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20220211181838.20152-1-philippe.reynes@softathome.com> References: <20220211181838.20152-1-philippe.reynes@softathome.com> X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email MIME-Version: 1.0 X-MS-Office365-Filtering-Correlation-Id: 2f6fe067-081c-479e-d81f-08d9ed8aee74 X-MS-TrafficTypeDiagnostic: MRXP264MB0055:EE_ X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:131; X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:149.6.166.170; 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Signed-off-by: Philippe Reynes --- drivers/mtd/nand/raw/Kconfig | 6 + drivers/mtd/nand/raw/brcmnand/Makefile | 1 + drivers/mtd/nand/raw/brcmnand/bcm6753_nand.c | 124 +++++++++++++++++++ 3 files changed, 131 insertions(+) create mode 100644 drivers/mtd/nand/raw/brcmnand/bcm6753_nand.c diff --git a/drivers/mtd/nand/raw/Kconfig b/drivers/mtd/nand/raw/Kconfig index 0e826c1929..1eab21e206 100644 --- a/drivers/mtd/nand/raw/Kconfig +++ b/drivers/mtd/nand/raw/Kconfig @@ -91,6 +91,12 @@ config NAND_BRCMNAND_6368 help Enable support for broadcom nand driver on bcm6368. +config NAND_BRCMNAND_6753 + bool "Support Broadcom NAND controller on bcm6753" + depends on NAND_BRCMNAND && ARCH_BCM6753 + help + Enable support for broadcom nand driver on bcm6753. + config NAND_BRCMNAND_68360 bool "Support Broadcom NAND controller on bcm68360" depends on NAND_BRCMNAND && ARCH_BCM68360 diff --git a/drivers/mtd/nand/raw/brcmnand/Makefile b/drivers/mtd/nand/raw/brcmnand/Makefile index 5d9e7e3f3b..f46a7edae3 100644 --- a/drivers/mtd/nand/raw/brcmnand/Makefile +++ b/drivers/mtd/nand/raw/brcmnand/Makefile @@ -2,6 +2,7 @@ obj-$(CONFIG_NAND_BRCMNAND_6368) += bcm6368_nand.o obj-$(CONFIG_NAND_BRCMNAND_63158) += bcm63158_nand.o +obj-$(CONFIG_NAND_BRCMNAND_6753) += bcm6753_nand.o obj-$(CONFIG_NAND_BRCMNAND_68360) += bcm68360_nand.o obj-$(CONFIG_NAND_BRCMNAND_6838) += bcm6838_nand.o obj-$(CONFIG_NAND_BRCMNAND_6858) += bcm6858_nand.o diff --git a/drivers/mtd/nand/raw/brcmnand/bcm6753_nand.c b/drivers/mtd/nand/raw/brcmnand/bcm6753_nand.c new file mode 100644 index 0000000000..feae66ef25 --- /dev/null +++ b/drivers/mtd/nand/raw/brcmnand/bcm6753_nand.c @@ -0,0 +1,124 @@ +// SPDX-License-Identifier: GPL-2.0+ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "brcmnand.h" + +struct bcm6753_nand_soc { + struct brcmnand_soc soc; + void __iomem *base; +}; + +#define BCM6753_NAND_INT 0x00 +#define BCM6753_NAND_STATUS_SHIFT 0 +#define BCM6753_NAND_STATUS_MASK (0xfff << BCM6753_NAND_STATUS_SHIFT) + +#define BCM6753_NAND_INT_EN 0x04 +#define BCM6753_NAND_ENABLE_SHIFT 0 +#define BCM6753_NAND_ENABLE_MASK (0xffff << BCM6753_NAND_ENABLE_SHIFT) + +enum { + BCM6753_NP_READ = BIT(0), + BCM6753_BLOCK_ERASE = BIT(1), + BCM6753_COPY_BACK = BIT(2), + BCM6753_PAGE_PGM = BIT(3), + BCM6753_CTRL_READY = BIT(4), + BCM6753_DEV_RBPIN = BIT(5), + BCM6753_ECC_ERR_UNC = BIT(6), + BCM6753_ECC_ERR_CORR = BIT(7), +}; + +static bool bcm6753_nand_intc_ack(struct brcmnand_soc *soc) +{ + struct bcm6753_nand_soc *priv = + container_of(soc, struct bcm6753_nand_soc, soc); + void __iomem *mmio = priv->base + BCM6753_NAND_INT; + u32 val = brcmnand_readl(mmio); + + if (val & (BCM6753_CTRL_READY << BCM6753_NAND_STATUS_SHIFT)) { + /* Ack interrupt */ + val &= ~BCM6753_NAND_STATUS_MASK; + val |= BCM6753_CTRL_READY << BCM6753_NAND_STATUS_SHIFT; + brcmnand_writel(val, mmio); + return true; + } + + return false; +} + +static void bcm6753_nand_intc_set(struct brcmnand_soc *soc, bool en) +{ + struct bcm6753_nand_soc *priv = + container_of(soc, struct bcm6753_nand_soc, soc); + void __iomem *mmio = priv->base + BCM6753_NAND_INT_EN; + u32 val = brcmnand_readl(mmio); + + /* Don't ack any interrupts */ + val &= ~BCM6753_NAND_STATUS_MASK; + + if (en) + val |= BCM6753_CTRL_READY << BCM6753_NAND_ENABLE_SHIFT; + else + val &= ~(BCM6753_CTRL_READY << BCM6753_NAND_ENABLE_SHIFT); + + brcmnand_writel(val, mmio); +} + +static int bcm6753_nand_probe(struct udevice *dev) +{ + struct udevice *pdev = dev; + struct bcm6753_nand_soc *priv = dev_get_priv(dev); + struct brcmnand_soc *soc; + struct resource res; + + soc = &priv->soc; + + dev_read_resource_byname(pdev, "nand-int-base", &res); + priv->base = devm_ioremap(dev, res.start, resource_size(&res)); + if (IS_ERR(priv->base)) + return PTR_ERR(priv->base); + + soc->ctlrdy_ack = bcm6753_nand_intc_ack; + soc->ctlrdy_set_enabled = bcm6753_nand_intc_set; + + /* Disable and ack all interrupts */ + brcmnand_writel(0, priv->base + BCM6753_NAND_INT_EN); + brcmnand_writel(0, priv->base + BCM6753_NAND_INT); + + return brcmnand_probe(pdev, soc); +} + +static const struct udevice_id bcm6753_nand_dt_ids[] = { + { + .compatible = "brcm,nand-bcm6753", + }, + { /* sentinel */ } +}; + +U_BOOT_DRIVER(bcm6753_nand) = { + .name = "bcm6753-nand", + .id = UCLASS_MTD, + .of_match = bcm6753_nand_dt_ids, + .probe = bcm6753_nand_probe, + .priv_auto = sizeof(struct bcm6753_nand_soc), +}; + +void board_nand_init(void) +{ + struct udevice *dev; + int ret; + + ret = uclass_get_device_by_driver(UCLASS_MTD, + DM_DRIVER_GET(bcm6753_nand), &dev); + if (ret && ret != -ENODEV) + pr_err("Failed to initialize %s. (error %d)\n", dev->name, + ret); +}