From patchwork Tue May 5 13:06:12 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wan Ahmad Zainie X-Patchwork-Id: 11529001 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 92779912 for ; Tue, 5 May 2020 13:07:29 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8395B2078C for ; Tue, 5 May 2020 13:07:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729018AbgEENH3 (ORCPT ); Tue, 5 May 2020 09:07:29 -0400 Received: from mga02.intel.com ([134.134.136.20]:12710 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728268AbgEENH3 (ORCPT ); Tue, 5 May 2020 09:07:29 -0400 IronPort-SDR: sIEbm9s2xiJ+ZgakjmNL0cyHx8+lNTAH8ipx14ufWV5xG8QZ48JIgHEt9FX3JP2XDLXKjnDsfb 19qDbhWS9QIg== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 May 2020 06:07:28 -0700 IronPort-SDR: QL8Xgt6N1bIWHZ/DGKCHTjs3JIXl0XiRKoadiPAvZF/WOOCF9ZpcVMeoZA/kReWEFSiD6kEJwl Lsc+yFrBQDeQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.73,355,1583222400"; d="scan'208";a="277868833" Received: from wwanmoha-ilbpg2.png.intel.com ([10.88.227.42]) by orsmga002.jf.intel.com with ESMTP; 05 May 2020 06:07:27 -0700 From: Wan Ahmad Zainie To: broonie@kernel.org, robh+dt@kernel.org Cc: linux-spi@vger.kernel.org, devicetree@vger.kernel.org, andriy.shevchenko@linux.intel.com, wan.ahmad.zainie.wan.mohamad@intel.com Subject: [PATCH v5 1/7] spi: dw: Fix typo in few registers name Date: Tue, 5 May 2020 21:06:12 +0800 Message-Id: <20200505130618.554-2-wan.ahmad.zainie.wan.mohamad@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200505130618.554-1-wan.ahmad.zainie.wan.mohamad@intel.com> References: <20200505130618.554-1-wan.ahmad.zainie.wan.mohamad@intel.com> Sender: linux-spi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org This patch will fix typo in the register name used in the source code, to be consistent with the register name used in the databook. Databook: DW_apb_ssi_databook.pdf version 4.01a Signed-off-by: Wan Ahmad Zainie Reviewed-by: Andy Shevchenko --- drivers/spi/spi-dw.c | 18 +++++++++--------- drivers/spi/spi-dw.h | 8 ++++---- 2 files changed, 13 insertions(+), 13 deletions(-) diff --git a/drivers/spi/spi-dw.c b/drivers/spi/spi-dw.c index 2b79c5a983c0..72a1c99ce9e6 100644 --- a/drivers/spi/spi-dw.c +++ b/drivers/spi/spi-dw.c @@ -47,9 +47,9 @@ static ssize_t dw_spi_show_regs(struct file *file, char __user *user_buf, len += scnprintf(buf + len, SPI_REGS_BUFSIZE - len, "=================================\n"); len += scnprintf(buf + len, SPI_REGS_BUFSIZE - len, - "CTRL0: \t\t0x%08x\n", dw_readl(dws, DW_SPI_CTRL0)); + "CTRLR0: \t0x%08x\n", dw_readl(dws, DW_SPI_CTRLR0)); len += scnprintf(buf + len, SPI_REGS_BUFSIZE - len, - "CTRL1: \t\t0x%08x\n", dw_readl(dws, DW_SPI_CTRL1)); + "CTRLR1: \t0x%08x\n", dw_readl(dws, DW_SPI_CTRLR1)); len += scnprintf(buf + len, SPI_REGS_BUFSIZE - len, "SSIENR: \t0x%08x\n", dw_readl(dws, DW_SPI_SSIENR)); len += scnprintf(buf + len, SPI_REGS_BUFSIZE - len, @@ -57,9 +57,9 @@ static ssize_t dw_spi_show_regs(struct file *file, char __user *user_buf, len += scnprintf(buf + len, SPI_REGS_BUFSIZE - len, "BAUDR: \t\t0x%08x\n", dw_readl(dws, DW_SPI_BAUDR)); len += scnprintf(buf + len, SPI_REGS_BUFSIZE - len, - "TXFTLR: \t0x%08x\n", dw_readl(dws, DW_SPI_TXFLTR)); + "TXFTLR: \t0x%08x\n", dw_readl(dws, DW_SPI_TXFTLR)); len += scnprintf(buf + len, SPI_REGS_BUFSIZE - len, - "RXFTLR: \t0x%08x\n", dw_readl(dws, DW_SPI_RXFLTR)); + "RXFTLR: \t0x%08x\n", dw_readl(dws, DW_SPI_RXFTLR)); len += scnprintf(buf + len, SPI_REGS_BUFSIZE - len, "TXFLR: \t\t0x%08x\n", dw_readl(dws, DW_SPI_TXFLR)); len += scnprintf(buf + len, SPI_REGS_BUFSIZE - len, @@ -304,7 +304,7 @@ static int dw_spi_transfer_one(struct spi_controller *master, (((spi->mode & SPI_LOOP) ? 1 : 0) << SPI_SRL_OFFSET)) | (chip->tmode << SPI_TMOD_OFFSET); - dw_writel(dws, DW_SPI_CTRL0, cr0); + dw_writel(dws, DW_SPI_CTRLR0, cr0); /* Check if current transfer is a DMA transaction */ if (master->can_dma && master->can_dma(master, spi, transfer)) @@ -325,7 +325,7 @@ static int dw_spi_transfer_one(struct spi_controller *master, } } else { txlevel = min_t(u16, dws->fifo_len / 2, dws->len / dws->n_bytes); - dw_writel(dws, DW_SPI_TXFLTR, txlevel); + dw_writel(dws, DW_SPI_TXFTLR, txlevel); /* Set the interrupt mask */ imask |= SPI_INT_TXEI | SPI_INT_TXOI | @@ -397,11 +397,11 @@ static void spi_hw_init(struct device *dev, struct dw_spi *dws) u32 fifo; for (fifo = 1; fifo < 256; fifo++) { - dw_writel(dws, DW_SPI_TXFLTR, fifo); - if (fifo != dw_readl(dws, DW_SPI_TXFLTR)) + dw_writel(dws, DW_SPI_TXFTLR, fifo); + if (fifo != dw_readl(dws, DW_SPI_TXFTLR)) break; } - dw_writel(dws, DW_SPI_TXFLTR, 0); + dw_writel(dws, DW_SPI_TXFTLR, 0); dws->fifo_len = (fifo == 1) ? 0 : fifo; dev_dbg(dev, "Detected FIFO size: %u bytes\n", dws->fifo_len); diff --git a/drivers/spi/spi-dw.h b/drivers/spi/spi-dw.h index 44ef18187c15..6c34720b1b1d 100644 --- a/drivers/spi/spi-dw.h +++ b/drivers/spi/spi-dw.h @@ -6,14 +6,14 @@ #include /* Register offsets */ -#define DW_SPI_CTRL0 0x00 -#define DW_SPI_CTRL1 0x04 +#define DW_SPI_CTRLR0 0x00 +#define DW_SPI_CTRLR1 0x04 #define DW_SPI_SSIENR 0x08 #define DW_SPI_MWCR 0x0c #define DW_SPI_SER 0x10 #define DW_SPI_BAUDR 0x14 -#define DW_SPI_TXFLTR 0x18 -#define DW_SPI_RXFLTR 0x1c +#define DW_SPI_TXFTLR 0x18 +#define DW_SPI_RXFTLR 0x1c #define DW_SPI_TXFLR 0x20 #define DW_SPI_RXFLR 0x24 #define DW_SPI_SR 0x28 From patchwork Tue May 5 13:06:13 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wan Ahmad Zainie X-Patchwork-Id: 11529003 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 09EC9912 for ; Tue, 5 May 2020 13:07:32 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id EE96F2073B for ; Tue, 5 May 2020 13:07:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729020AbgEENHb (ORCPT ); Tue, 5 May 2020 09:07:31 -0400 Received: from mga02.intel.com ([134.134.136.20]:12710 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728268AbgEENHb (ORCPT ); Tue, 5 May 2020 09:07:31 -0400 IronPort-SDR: 7nCZzMcjo74ZeJnPVTXtWyWq1Z7ccVQJ4HF6KoabfpgOpZUnPdybIHmKyJkF8Zu6AakVcjaRe4 F5DFxkBwOOuA== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 May 2020 06:07:30 -0700 IronPort-SDR: HZA4mmd9N+Kg3gAWUA6/sKXEvUzpC+GiKyz/LkmVDQsn1mVKUmUuUcDu6dpqpctDqc7kejS/YI yZEqDlMsA6rw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.73,355,1583222400"; d="scan'208";a="277868842" Received: from wwanmoha-ilbpg2.png.intel.com ([10.88.227.42]) by orsmga002.jf.intel.com with ESMTP; 05 May 2020 06:07:29 -0700 From: Wan Ahmad Zainie To: broonie@kernel.org, robh+dt@kernel.org Cc: linux-spi@vger.kernel.org, devicetree@vger.kernel.org, andriy.shevchenko@linux.intel.com, wan.ahmad.zainie.wan.mohamad@intel.com Subject: [PATCH v5 2/7] spi: dw: Add update_cr0() callback to update CTRLR0 Date: Tue, 5 May 2020 21:06:13 +0800 Message-Id: <20200505130618.554-3-wan.ahmad.zainie.wan.mohamad@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200505130618.554-1-wan.ahmad.zainie.wan.mohamad@intel.com> References: <20200505130618.554-1-wan.ahmad.zainie.wan.mohamad@intel.com> Sender: linux-spi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org This patch adds update_cr0() callback, in struct dw_spi. Existing code that configure register CTRLR0 is moved into a new function, dw_spi_update_cr0(), and this will be the default. Suggested-by: Andy Shevchenko Signed-off-by: Wan Ahmad Zainie Reviewed-by: Andy Shevchenko --- drivers/spi/spi-dw-mid.c | 4 ++++ drivers/spi/spi-dw-mmio.c | 21 ++++++++++++++++++--- drivers/spi/spi-dw.c | 29 +++++++++++++++++++++-------- drivers/spi/spi-dw.h | 5 +++++ 4 files changed, 48 insertions(+), 11 deletions(-) diff --git a/drivers/spi/spi-dw-mid.c b/drivers/spi/spi-dw-mid.c index 0d86c37e0aeb..9cc010e9737e 100644 --- a/drivers/spi/spi-dw-mid.c +++ b/drivers/spi/spi-dw-mid.c @@ -318,5 +318,9 @@ int dw_spi_mid_init(struct dw_spi *dws) dws->dma_rx = &mid_dma_rx; dws->dma_ops = &mid_dma_ops; #endif + + /* Register hook to configure CTRLR0 */ + dws->update_cr0 = dw_spi_update_cr0; + return 0; } diff --git a/drivers/spi/spi-dw-mmio.c b/drivers/spi/spi-dw-mmio.c index 384a3ab6dc2d..a52f75e22109 100644 --- a/drivers/spi/spi-dw-mmio.c +++ b/drivers/spi/spi-dw-mmio.c @@ -106,6 +106,9 @@ static int dw_spi_mscc_init(struct platform_device *pdev, dwsmmio->dws.set_cs = dw_spi_mscc_set_cs; dwsmmio->priv = dwsmscc; + /* Register hook to configure CTRLR0 */ + dwsmmio->dws.update_cr0 = dw_spi_update_cr0; + return 0; } @@ -128,6 +131,18 @@ static int dw_spi_alpine_init(struct platform_device *pdev, { dwsmmio->dws.cs_override = 1; + /* Register hook to configure CTRLR0 */ + dwsmmio->dws.update_cr0 = dw_spi_update_cr0; + + return 0; +} + +static int dw_spi_dw_apb_init(struct platform_device *pdev, + struct dw_spi_mmio *dwsmmio) +{ + /* Register hook to configure CTRLR0 */ + dwsmmio->dws.update_cr0 = dw_spi_update_cr0; + return 0; } @@ -224,17 +239,17 @@ static int dw_spi_mmio_remove(struct platform_device *pdev) } static const struct of_device_id dw_spi_mmio_of_match[] = { - { .compatible = "snps,dw-apb-ssi", }, + { .compatible = "snps,dw-apb-ssi", .data = dw_spi_dw_apb_init}, { .compatible = "mscc,ocelot-spi", .data = dw_spi_mscc_ocelot_init}, { .compatible = "mscc,jaguar2-spi", .data = dw_spi_mscc_jaguar2_init}, { .compatible = "amazon,alpine-dw-apb-ssi", .data = dw_spi_alpine_init}, - { .compatible = "renesas,rzn1-spi", }, + { .compatible = "renesas,rzn1-spi", .data = dw_spi_dw_apb_init}, { /* end of table */} }; MODULE_DEVICE_TABLE(of, dw_spi_mmio_of_match); static const struct acpi_device_id dw_spi_mmio_acpi_match[] = { - {"HISI0173", 0}, + {"HISI0173", (kernel_ulong_t)dw_spi_dw_apb_init}, {}, }; MODULE_DEVICE_TABLE(acpi, dw_spi_mmio_acpi_match); diff --git a/drivers/spi/spi-dw.c b/drivers/spi/spi-dw.c index 72a1c99ce9e6..4905457641ef 100644 --- a/drivers/spi/spi-dw.c +++ b/drivers/spi/spi-dw.c @@ -257,6 +257,26 @@ static irqreturn_t dw_spi_irq(int irq, void *dev_id) return dws->transfer_handler(dws); } +/* Configure CTRLR0 for DW_apb_ssi */ +u32 dw_spi_update_cr0(struct spi_controller *master, struct spi_device *spi, + struct spi_transfer *transfer) +{ + struct dw_spi *dws = spi_controller_get_devdata(master); + struct chip_data *chip = spi_get_ctldata(spi); + u32 cr0; + + /* Default SPI mode is SCPOL = 0, SCPH = 0 */ + cr0 = (transfer->bits_per_word - 1) + | (chip->type << SPI_FRF_OFFSET) + | ((((spi->mode & SPI_CPOL) ? 1 : 0) << SPI_SCOL_OFFSET) | + (((spi->mode & SPI_CPHA) ? 1 : 0) << SPI_SCPH_OFFSET) | + (((spi->mode & SPI_LOOP) ? 1 : 0) << SPI_SRL_OFFSET)) + | (chip->tmode << SPI_TMOD_OFFSET); + + return cr0; +} +EXPORT_SYMBOL_GPL(dw_spi_update_cr0); + static int dw_spi_transfer_one(struct spi_controller *master, struct spi_device *spi, struct spi_transfer *transfer) { @@ -296,14 +316,7 @@ static int dw_spi_transfer_one(struct spi_controller *master, dws->n_bytes = DIV_ROUND_UP(transfer->bits_per_word, BITS_PER_BYTE); dws->dma_width = DIV_ROUND_UP(transfer->bits_per_word, BITS_PER_BYTE); - /* Default SPI mode is SCPOL = 0, SCPH = 0 */ - cr0 = (transfer->bits_per_word - 1) - | (chip->type << SPI_FRF_OFFSET) - | ((((spi->mode & SPI_CPOL) ? 1 : 0) << SPI_SCOL_OFFSET) | - (((spi->mode & SPI_CPHA) ? 1 : 0) << SPI_SCPH_OFFSET) | - (((spi->mode & SPI_LOOP) ? 1 : 0) << SPI_SRL_OFFSET)) - | (chip->tmode << SPI_TMOD_OFFSET); - + cr0 = dws->update_cr0(master, spi, transfer); dw_writel(dws, DW_SPI_CTRLR0, cr0); /* Check if current transfer is a DMA transaction */ diff --git a/drivers/spi/spi-dw.h b/drivers/spi/spi-dw.h index 6c34720b1b1d..2745a7e7405c 100644 --- a/drivers/spi/spi-dw.h +++ b/drivers/spi/spi-dw.h @@ -114,6 +114,8 @@ struct dw_spi { u16 bus_num; u16 num_cs; /* supported slave numbers */ void (*set_cs)(struct spi_device *spi, bool enable); + u32 (*update_cr0)(struct spi_controller *master, struct spi_device *spi, + struct spi_transfer *transfer); /* Current message transfer state info */ size_t len; @@ -240,6 +242,9 @@ extern int dw_spi_add_host(struct device *dev, struct dw_spi *dws); extern void dw_spi_remove_host(struct dw_spi *dws); extern int dw_spi_suspend_host(struct dw_spi *dws); extern int dw_spi_resume_host(struct dw_spi *dws); +extern u32 dw_spi_update_cr0(struct spi_controller *master, + struct spi_device *spi, + struct spi_transfer *transfer); /* platform related setup */ extern int dw_spi_mid_init(struct dw_spi *dws); /* Intel MID platforms */ From patchwork Tue May 5 13:06:14 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wan Ahmad Zainie X-Patchwork-Id: 11529005 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id D5A7B1392 for ; Tue, 5 May 2020 13:07:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C78622073B for ; Tue, 5 May 2020 13:07:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729025AbgEENHd (ORCPT ); Tue, 5 May 2020 09:07:33 -0400 Received: from mga02.intel.com ([134.134.136.20]:12710 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728268AbgEENHd (ORCPT ); Tue, 5 May 2020 09:07:33 -0400 IronPort-SDR: eoB23/ZNT6Kdfn6eD5CYgEetKpZo/ui/QUuwRhiO5vpw4ZT1YU7/SOdpp4qOZ/Z3DE8y8jeVHi WsR08TtKaoUw== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 May 2020 06:07:32 -0700 IronPort-SDR: ZJuyGMsTx+0benBMYGFBUnun9CsjN2vkHWrsNmmrTS0C4pRnz/2jOveN0YlG2brRnD9/ohH0M5 GYDB+XskQ5cA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.73,355,1583222400"; d="scan'208";a="277868854" Received: from wwanmoha-ilbpg2.png.intel.com ([10.88.227.42]) by orsmga002.jf.intel.com with ESMTP; 05 May 2020 06:07:31 -0700 From: Wan Ahmad Zainie To: broonie@kernel.org, robh+dt@kernel.org Cc: linux-spi@vger.kernel.org, devicetree@vger.kernel.org, andriy.shevchenko@linux.intel.com, wan.ahmad.zainie.wan.mohamad@intel.com Subject: [PATCH v5 3/7] spi: dw: Add support for DesignWare DWC_ssi Date: Tue, 5 May 2020 21:06:14 +0800 Message-Id: <20200505130618.554-4-wan.ahmad.zainie.wan.mohamad@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200505130618.554-1-wan.ahmad.zainie.wan.mohamad@intel.com> References: <20200505130618.554-1-wan.ahmad.zainie.wan.mohamad@intel.com> Sender: linux-spi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org This patch adds initial support for DesignWare DWC_ssi soft IP. DWC_ssi is the enhanced version of DW_apb_ssi, which is currently supported by this driver. Their registers are same, but the bit fields of register CTRLR0 are different. DWC_ssi has additional features compared to DW_apb_ssi. Major enhancements in DWC_ssi are hyper bus protocol, boot mode support and advanced XIP support. DWC_ssi is an AHB slave device, whilst DW_apb_ssi is an APB slave device. Register offset DW_ssi DW_apb_ssi CTRLR0 0x00 0x00 CTRLR1 0x04 0x04 SSIENR 0x08 0x08 MWCR 0x0c 0x0c SER 0x10 0x10 BAUDR 0x14 0x14 TXFTLR 0x18 0x18 RXFTLR 0x1c 0x1c TXFLR 0x20 0x20 RXFLR 0x24 0x24 SR 0x28 0x28 IMR 0x2c 0x2c ISR 0x30 0x30 RISR 0x34 0x34 TXOICR 0x38 0x38 RXOICR 0x3c 0x3c RXUICR 0x40 0x40 MSTICR 0x44 0x44 ICR 0x48 0x48 DMACR 0x4c 0x4c DMATDLR 0x50 0x50 DMARDLR 0x54 0x54 IDR 0x58 0x58 SSI_VERSION_ID 0x5c 0x5c DRx (0 to 35) 0x60+i*0x4 0x60+i*0x4 RX_SAMPLE_DLY 0xf0 0xf0 SPI_CTRLR0 0xf4 0xf4 TXD_DRIVE_EDGE 0xf8 0xf8 XIP_MODE_BITS 0xfc RSVD Register configuration - CTRLR0 DW_ssi DW_apb_ssi SPI_HYPERBUS_EN bit[24] NONE SPI_FRF bit[23:22] bit[22:21] DFS_32 NONE bit[20:16] CFS bit[19:16] bit[15:12] SSTE bit[14] bit[24] SRL bit[13] bit[11] SLV_OE bit[12] bit[10] TMOD bit[11:10] bit[9:8] SCPOL | SPHA bit[9:8] bit[7:6] FRF bit[7:6] bit[5:4] DFS bit[4:0] bit[3:0] The documents used are [1] DW_apb_ssi_databook.pdf version 4.01a (2016.10a). [2] DWC_ssi_databook.pdf version 1.01a. Signed-off-by: Wan Ahmad Zainie Reviewed-by: Andy Shevchenko --- drivers/spi/spi-dw-mmio.c | 10 ++++++++++ drivers/spi/spi-dw.c | 33 +++++++++++++++++++++++++++++++++ drivers/spi/spi-dw.h | 12 ++++++++++++ 3 files changed, 55 insertions(+) diff --git a/drivers/spi/spi-dw-mmio.c b/drivers/spi/spi-dw-mmio.c index a52f75e22109..1df6f3deee2c 100644 --- a/drivers/spi/spi-dw-mmio.c +++ b/drivers/spi/spi-dw-mmio.c @@ -146,6 +146,15 @@ static int dw_spi_dw_apb_init(struct platform_device *pdev, return 0; } +static int dw_spi_dwc_ssi_init(struct platform_device *pdev, + struct dw_spi_mmio *dwsmmio) +{ + /* Register hook to configure CTRLR0 */ + dwsmmio->dws.update_cr0 = dw_spi_update_cr0_v1_01a; + + return 0; +} + static int dw_spi_mmio_probe(struct platform_device *pdev) { int (*init_func)(struct platform_device *pdev, @@ -244,6 +253,7 @@ static const struct of_device_id dw_spi_mmio_of_match[] = { { .compatible = "mscc,jaguar2-spi", .data = dw_spi_mscc_jaguar2_init}, { .compatible = "amazon,alpine-dw-apb-ssi", .data = dw_spi_alpine_init}, { .compatible = "renesas,rzn1-spi", .data = dw_spi_dw_apb_init}, + { .compatible = "snps,dwc-ssi-1.01a", .data = dw_spi_dwc_ssi_init}, { /* end of table */} }; MODULE_DEVICE_TABLE(of, dw_spi_mmio_of_match); diff --git a/drivers/spi/spi-dw.c b/drivers/spi/spi-dw.c index 4905457641ef..240a61b66a06 100644 --- a/drivers/spi/spi-dw.c +++ b/drivers/spi/spi-dw.c @@ -277,6 +277,39 @@ u32 dw_spi_update_cr0(struct spi_controller *master, struct spi_device *spi, } EXPORT_SYMBOL_GPL(dw_spi_update_cr0); +/* Configure CTRLR0 for DWC_ssi */ +u32 dw_spi_update_cr0_v1_01a(struct spi_controller *master, + struct spi_device *spi, + struct spi_transfer *transfer) +{ + struct dw_spi *dws = spi_controller_get_devdata(master); + struct chip_data *chip = spi_get_ctldata(spi); + u32 cr0; + + /* CTRLR0[ 4: 0] Data Frame Size */ + cr0 = (transfer->bits_per_word - 1); + + /* CTRLR0[ 7: 6] Frame Format */ + cr0 |= chip->type << DWC_SSI_CTRLR0_FRF_OFFSET; + + /* + * SPI mode (SCPOL|SCPH) + * CTRLR0[ 8] Serial Clock Phase + * CTRLR0[ 9] Serial Clock Polarity + */ + cr0 |= ((spi->mode & SPI_CPOL) ? 1 : 0) << DWC_SSI_CTRLR0_SCPOL_OFFSET; + cr0 |= ((spi->mode & SPI_CPHA) ? 1 : 0) << DWC_SSI_CTRLR0_SCPH_OFFSET; + + /* CTRLR0[11:10] Transfer Mode */ + cr0 |= chip->tmode << DWC_SSI_CTRLR0_TMOD_OFFSET; + + /* CTRLR0[13] Shift Register Loop */ + cr0 |= ((spi->mode & SPI_LOOP) ? 1 : 0) << DWC_SSI_CTRLR0_SRL_OFFSET; + + return cr0; +} +EXPORT_SYMBOL_GPL(dw_spi_update_cr0_v1_01a); + static int dw_spi_transfer_one(struct spi_controller *master, struct spi_device *spi, struct spi_transfer *transfer) { diff --git a/drivers/spi/spi-dw.h b/drivers/spi/spi-dw.h index 2745a7e7405c..8fe724279d15 100644 --- a/drivers/spi/spi-dw.h +++ b/drivers/spi/spi-dw.h @@ -57,6 +57,15 @@ #define SPI_SRL_OFFSET 11 #define SPI_CFS_OFFSET 12 +/* Bit fields in CTRLR0 based on DWC_ssi_databook.pdf v1.01a */ +#define DWC_SSI_CTRLR0_SRL_OFFSET 13 +#define DWC_SSI_CTRLR0_TMOD_OFFSET 10 +#define DWC_SSI_CTRLR0_TMOD_MASK GENMASK(11, 10) +#define DWC_SSI_CTRLR0_SCPOL_OFFSET 9 +#define DWC_SSI_CTRLR0_SCPH_OFFSET 8 +#define DWC_SSI_CTRLR0_FRF_OFFSET 6 +#define DWC_SSI_CTRLR0_DFS_OFFSET 0 + /* Bit fields in SR, 7 bits */ #define SR_MASK 0x7f /* cover 7 bits */ #define SR_BUSY (1 << 0) @@ -245,6 +254,9 @@ extern int dw_spi_resume_host(struct dw_spi *dws); extern u32 dw_spi_update_cr0(struct spi_controller *master, struct spi_device *spi, struct spi_transfer *transfer); +extern u32 dw_spi_update_cr0_v1_01a(struct spi_controller *master, + struct spi_device *spi, + struct spi_transfer *transfer); /* platform related setup */ extern int dw_spi_mid_init(struct dw_spi *dws); /* Intel MID platforms */ From patchwork Tue May 5 13:06:15 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wan Ahmad Zainie X-Patchwork-Id: 11529007 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 9EB971392 for ; Tue, 5 May 2020 13:07:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8750B2073B for ; Tue, 5 May 2020 13:07:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729027AbgEENHf (ORCPT ); Tue, 5 May 2020 09:07:35 -0400 Received: from mga02.intel.com ([134.134.136.20]:12710 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728268AbgEENHf (ORCPT ); Tue, 5 May 2020 09:07:35 -0400 IronPort-SDR: +BZXjCU1C+KJHRSZdA9ms6EfoVIvuk2mr7VHuyNk63I74Q8Al2v/Bi4NzVy99IiGiE/etwzb2K ws4MGDvkDVAw== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 May 2020 06:07:34 -0700 IronPort-SDR: X73nFGgM57grZ9QyKw8Hub8XYiQ6pH4G747e/HFpPj4QQuhKKnhzOx8xWQsv9FVc0W2v3YcA4x CED5SxOOFQCA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.73,355,1583222400"; d="scan'208";a="277868873" Received: from wwanmoha-ilbpg2.png.intel.com ([10.88.227.42]) by orsmga002.jf.intel.com with ESMTP; 05 May 2020 06:07:33 -0700 From: Wan Ahmad Zainie To: broonie@kernel.org, robh+dt@kernel.org Cc: linux-spi@vger.kernel.org, devicetree@vger.kernel.org, andriy.shevchenko@linux.intel.com, wan.ahmad.zainie.wan.mohamad@intel.com Subject: [PATCH v5 4/7] dt-bindings: spi: dw-apb-ssi: Add compatible string for DesignWare DWC_ssi Date: Tue, 5 May 2020 21:06:15 +0800 Message-Id: <20200505130618.554-5-wan.ahmad.zainie.wan.mohamad@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200505130618.554-1-wan.ahmad.zainie.wan.mohamad@intel.com> References: <20200505130618.554-1-wan.ahmad.zainie.wan.mohamad@intel.com> Sender: linux-spi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org This patch adds compatible string "snps,dwc-ssi-1.01a" to the above DT binding document, to provide support for DesignWare DWC_ssi IP [1]. Current driver supports DW_apb_ssi IP [2]. References: [1] https://www.synopsys.com/dw/ipdir.php?c=dwc_ssi [2] https://www.synopsys.com/dw/ipdir.php?c=DW_apb_ssi Signed-off-by: Wan Ahmad Zainie --- Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.txt | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.txt b/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.txt index 3ed08ee9feba..2ead46b633ea 100644 --- a/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.txt +++ b/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.txt @@ -2,7 +2,7 @@ Synopsys DesignWare AMBA 2.0 Synchronous Serial Interface. Required properties: - compatible : "snps,dw-apb-ssi" or "mscc,-spi", where soc is "ocelot" or - "jaguar2", or "amazon,alpine-dw-apb-ssi" + "jaguar2", or "amazon,alpine-dw-apb-ssi", or "snps,dwc-ssi-1.01a" - reg : The register base for the controller. For "mscc,-spi", a second register set is required (named ICPU_CFG:SPI_MST) - interrupts : One interrupt, used by the controller. From patchwork Tue May 5 13:06:16 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wan Ahmad Zainie X-Patchwork-Id: 11529009 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 3B3BE912 for ; Tue, 5 May 2020 13:07:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 238042073B for ; Tue, 5 May 2020 13:07:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729028AbgEENHg (ORCPT ); Tue, 5 May 2020 09:07:36 -0400 Received: from mga02.intel.com ([134.134.136.20]:12710 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728268AbgEENHg (ORCPT ); Tue, 5 May 2020 09:07:36 -0400 IronPort-SDR: 4cOEtDb+Jnq5WaA0IttrZqdStLevdsIga65RcIIfLSiLHwIjZBDl6soedeX3YHGmtAWBWSd0Ga 6U9QyCKMlH+A== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 May 2020 06:07:36 -0700 IronPort-SDR: Rn/jhVeeClFyI2gibk+6EymJUbGMJqHnEntQ0yBDFlt53S8h2zGocmngFuuxf76iL1LEztwJI1 78pKW8fLrxWA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.73,355,1583222400"; d="scan'208";a="277868878" Received: from wwanmoha-ilbpg2.png.intel.com ([10.88.227.42]) by orsmga002.jf.intel.com with ESMTP; 05 May 2020 06:07:35 -0700 From: Wan Ahmad Zainie To: broonie@kernel.org, robh+dt@kernel.org Cc: linux-spi@vger.kernel.org, devicetree@vger.kernel.org, andriy.shevchenko@linux.intel.com, wan.ahmad.zainie.wan.mohamad@intel.com Subject: [PATCH v5 5/7] spi: dw: Add support for Intel Keem Bay SPI Date: Tue, 5 May 2020 21:06:16 +0800 Message-Id: <20200505130618.554-6-wan.ahmad.zainie.wan.mohamad@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200505130618.554-1-wan.ahmad.zainie.wan.mohamad@intel.com> References: <20200505130618.554-1-wan.ahmad.zainie.wan.mohamad@intel.com> Sender: linux-spi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org Add support for Intel Keem Bay SPI controller, which uses DesignWare DWC_ssi core. Bit 31 of CTRLR0 register is added for Keem Bay, to configure the device as a master or as a slave serial peripheral. Signed-off-by: Wan Ahmad Zainie Reviewed-by: Andy Shevchenko --- drivers/spi/spi-dw-mmio.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/drivers/spi/spi-dw-mmio.c b/drivers/spi/spi-dw-mmio.c index 1df6f3deee2c..abd3bb5e52db 100644 --- a/drivers/spi/spi-dw-mmio.c +++ b/drivers/spi/spi-dw-mmio.c @@ -44,6 +44,13 @@ struct dw_spi_mmio { #define MSCC_SPI_MST_SW_MODE_SW_PIN_CTRL_MODE BIT(13) #define MSCC_SPI_MST_SW_MODE_SW_SPI_CS(x) (x << 5) +/* + * For Keem Bay, CTRLR0[31] is used to select controller mode. + * 0: SSI is slave + * 1: SSI is master + */ +#define KEEMBAY_CTRLR0_SSIC_IS_MST BIT(31) + struct dw_spi_mscc { struct regmap *syscon; void __iomem *spi_mst; @@ -155,6 +162,24 @@ static int dw_spi_dwc_ssi_init(struct platform_device *pdev, return 0; } +static u32 dw_spi_update_cr0_keembay(struct spi_controller *master, + struct spi_device *spi, + struct spi_transfer *transfer) +{ + u32 cr0 = dw_spi_update_cr0_v1_01a(master, spi, transfer); + + return cr0 | KEEMBAY_CTRLR0_SSIC_IS_MST; +} + +static int dw_spi_keembay_init(struct platform_device *pdev, + struct dw_spi_mmio *dwsmmio) +{ + /* Register hook to configure CTRLR0 */ + dwsmmio->dws.update_cr0 = dw_spi_update_cr0_keembay; + + return 0; +} + static int dw_spi_mmio_probe(struct platform_device *pdev) { int (*init_func)(struct platform_device *pdev, @@ -254,6 +279,7 @@ static const struct of_device_id dw_spi_mmio_of_match[] = { { .compatible = "amazon,alpine-dw-apb-ssi", .data = dw_spi_alpine_init}, { .compatible = "renesas,rzn1-spi", .data = dw_spi_dw_apb_init}, { .compatible = "snps,dwc-ssi-1.01a", .data = dw_spi_dwc_ssi_init}, + { .compatible = "intel,keembay-ssi", .data = dw_spi_keembay_init}, { /* end of table */} }; MODULE_DEVICE_TABLE(of, dw_spi_mmio_of_match); From patchwork Tue May 5 13:06:17 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wan Ahmad Zainie X-Patchwork-Id: 11529011 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 97C2E912 for ; Tue, 5 May 2020 13:07:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 80719207DD for ; Tue, 5 May 2020 13:07:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728608AbgEENHj (ORCPT ); Tue, 5 May 2020 09:07:39 -0400 Received: from mga02.intel.com ([134.134.136.20]:12710 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728268AbgEENHj (ORCPT ); Tue, 5 May 2020 09:07:39 -0400 IronPort-SDR: JazBSQvQYmb6ptndYUFbmK8b/lh64wTqUgFIdIPQtSc/spXHRE0e97Mo17r8j+1owaGRcAXOdM rY5sclzAd6kw== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 May 2020 06:07:38 -0700 IronPort-SDR: 9GzR8BnnzfwCNABNZsjmiAx65g00H6Bf+zvo2c5DgVp+L/ChpvO9W0CZzdMRs7wbkKXVVqYRVm gVPx/Ob5GOqQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.73,355,1583222400"; d="scan'208";a="277868887" Received: from wwanmoha-ilbpg2.png.intel.com ([10.88.227.42]) by orsmga002.jf.intel.com with ESMTP; 05 May 2020 06:07:36 -0700 From: Wan Ahmad Zainie To: broonie@kernel.org, robh+dt@kernel.org Cc: linux-spi@vger.kernel.org, devicetree@vger.kernel.org, andriy.shevchenko@linux.intel.com, wan.ahmad.zainie.wan.mohamad@intel.com Subject: [PATCH v5 6/7] dt-bindings: spi: dw-apb-ssi: Add Intel Keem Bay support Date: Tue, 5 May 2020 21:06:17 +0800 Message-Id: <20200505130618.554-7-wan.ahmad.zainie.wan.mohamad@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200505130618.554-1-wan.ahmad.zainie.wan.mohamad@intel.com> References: <20200505130618.554-1-wan.ahmad.zainie.wan.mohamad@intel.com> Sender: linux-spi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org Document Intel Keem Bay SPI controller DT bindings. Signed-off-by: Wan Ahmad Zainie --- Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.txt | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.txt b/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.txt index 2ead46b633ea..7a4702edf896 100644 --- a/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.txt +++ b/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.txt @@ -2,7 +2,8 @@ Synopsys DesignWare AMBA 2.0 Synchronous Serial Interface. Required properties: - compatible : "snps,dw-apb-ssi" or "mscc,-spi", where soc is "ocelot" or - "jaguar2", or "amazon,alpine-dw-apb-ssi", or "snps,dwc-ssi-1.01a" + "jaguar2", or "amazon,alpine-dw-apb-ssi", or "snps,dwc-ssi-1.01a" or + "intel,keembay-ssi" - reg : The register base for the controller. For "mscc,-spi", a second register set is required (named ICPU_CFG:SPI_MST) - interrupts : One interrupt, used by the controller. From patchwork Tue May 5 13:06:18 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Wan Ahmad Zainie X-Patchwork-Id: 11529013 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 952BA15E6 for ; Tue, 5 May 2020 13:07:41 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 87FEC2073B for ; Tue, 5 May 2020 13:07:41 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729032AbgEENHl (ORCPT ); Tue, 5 May 2020 09:07:41 -0400 Received: from mga02.intel.com ([134.134.136.20]:12710 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728268AbgEENHl (ORCPT ); Tue, 5 May 2020 09:07:41 -0400 IronPort-SDR: YISMi0JbNWh5+1/w9aBJAKthDYVtDfgCQ2/UBeleOyPEGmIa49dLvpGVLRBxZL1G62JBQkwvYa B8Krf/Ecb6kA== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga101.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 May 2020 06:07:40 -0700 IronPort-SDR: eh9aW7Yj4e8IELj90XVTZHYyxGtarK2gG+gUqesXEYhPWipehp2m61w78NZhf1IsmEQUv+jc55 qGmVU20YqpGQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.73,355,1583222400"; d="scan'208";a="277868901" Received: from wwanmoha-ilbpg2.png.intel.com ([10.88.227.42]) by orsmga002.jf.intel.com with ESMTP; 05 May 2020 06:07:38 -0700 From: Wan Ahmad Zainie To: broonie@kernel.org, robh+dt@kernel.org Cc: linux-spi@vger.kernel.org, devicetree@vger.kernel.org, andriy.shevchenko@linux.intel.com, wan.ahmad.zainie.wan.mohamad@intel.com Subject: [PATCH v5 7/7] dt-bindings: spi: dw-apb-ssi: Convert bindings to json-schema Date: Tue, 5 May 2020 21:06:18 +0800 Message-Id: <20200505130618.554-8-wan.ahmad.zainie.wan.mohamad@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200505130618.554-1-wan.ahmad.zainie.wan.mohamad@intel.com> References: <20200505130618.554-1-wan.ahmad.zainie.wan.mohamad@intel.com> Sender: linux-spi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org Convert the Synopsis DesignWare dw-apb-ssi binding to DT schema format using json-schema. Suggested-by: Andy Shevchenko Signed-off-by: Wan Ahmad Zainie --- .../bindings/spi/snps,dw-apb-ssi.txt | 42 ----------- .../bindings/spi/snps,dw-apb-ssi.yaml | 72 +++++++++++++++++++ 2 files changed, 72 insertions(+), 42 deletions(-) delete mode 100644 Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.txt create mode 100644 Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.yaml diff --git a/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.txt b/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.txt deleted file mode 100644 index 7a4702edf896..000000000000 --- a/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.txt +++ /dev/null @@ -1,42 +0,0 @@ -Synopsys DesignWare AMBA 2.0 Synchronous Serial Interface. - -Required properties: -- compatible : "snps,dw-apb-ssi" or "mscc,-spi", where soc is "ocelot" or - "jaguar2", or "amazon,alpine-dw-apb-ssi", or "snps,dwc-ssi-1.01a" or - "intel,keembay-ssi" -- reg : The register base for the controller. For "mscc,-spi", a second - register set is required (named ICPU_CFG:SPI_MST) -- interrupts : One interrupt, used by the controller. -- #address-cells : <1>, as required by generic SPI binding. -- #size-cells : <0>, also as required by generic SPI binding. -- clocks : phandles for the clocks, see the description of clock-names below. - The phandle for the "ssi_clk" is required. The phandle for the "pclk" clock - is optional. If a single clock is specified but no clock-name, it is the - "ssi_clk" clock. If both clocks are listed, the "ssi_clk" must be first. - -Optional properties: -- clock-names : Contains the names of the clocks: - "ssi_clk", for the core clock used to generate the external SPI clock. - "pclk", the interface clock, required for register access. If a clock domain - used to enable this clock then it should be named "pclk_clkdomain". -- cs-gpios : Specifies the gpio pins to be used for chipselects. -- num-cs : The number of chipselects. If omitted, this will default to 4. -- reg-io-width : The I/O register width (in bytes) implemented by this - device. Supported values are 2 or 4 (the default). - -Child nodes as per the generic SPI binding. - -Example: - - spi@fff00000 { - compatible = "snps,dw-apb-ssi"; - reg = <0xfff00000 0x1000>; - interrupts = <0 154 4>; - #address-cells = <1>; - #size-cells = <0>; - clocks = <&spi_m_clk>; - num-cs = <2>; - cs-gpios = <&gpio0 13 0>, - <&gpio0 14 0>; - }; - diff --git a/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.yaml b/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.yaml new file mode 100644 index 000000000000..edc1e6fb9993 --- /dev/null +++ b/Documentation/devicetree/bindings/spi/snps,dw-apb-ssi.yaml @@ -0,0 +1,72 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: "http://devicetree.org/schemas/spi/snps,dw-apb-ssi.yaml#" +$schema: "http://devicetree.org/meta-schemas/core.yaml#" + +title: Synopsys DesignWare AMBA 2.0 Synchronous Serial Interface + +maintainers: + - Wan Ahmad Zainie + +allOf: + - $ref: "spi-controller.yaml#" + +properties: + compatible: + enum: + - mscc,ocelot-spi + - mscc,jaguar2-spi + - amazon,alpine-dw-apb-ssi + - snps,dw-apb-ssi + - snps,dwc-ssi-1.01a + - intel,keembay-ssi + + reg: + minItems: 1 + maxItems: 2 + items: + - description: The register base for the controller. + - description: For "mscc,-spi", a second register set is required. + + interrupts: + maxItems: 1 + + clocks: + minItems: 1 + maxItems: 2 + items: + - description: The core clock used to generate the external SPI clock. + - description: The interface clock required for register access. + + clock-names: + items: + - const: ssi_clk + - const: pclk + + reg-io-width: + allOf: + - $ref: /schemas/types.yaml#/definitions/uint32 + - enum: [ 2, 4 ] + - default: 4 + description: The I/O register width (in bytes) implemented by this device. + +required: + - compatible + - reg + - interrupts + - clocks + +examples: + - | + spi@fff00000 { + compatible = "snps,dw-apb-ssi"; + reg = <0xfff00000 0x1000>; + interrupts = <0 154 4>; + #address-cells = <1>; + #size-cells = <0>; + clocks = <&spi_m_clk>; + num-cs = <2>; + cs-gpios = <&gpio0 13 0>, + <&gpio0 14 0>; + };