From patchwork Mon Nov 16 03:10:00 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Ramuthevar,Vadivel MuruganX" X-Patchwork-Id: 11907327 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 3E52517CF for ; Mon, 16 Nov 2020 03:10:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 27BDB22453 for ; Mon, 16 Nov 2020 03:10:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726902AbgKPDKX (ORCPT ); Sun, 15 Nov 2020 22:10:23 -0500 Received: from mga18.intel.com ([134.134.136.126]:37816 "EHLO mga18.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726876AbgKPDKX (ORCPT ); Sun, 15 Nov 2020 22:10:23 -0500 IronPort-SDR: r/XciGWcix0QG+WXMyJk0LDjGr18hgQRXtlEZMPAv+mhEazPgARppon9SLuADHQjq4q4RzmHZF AUlbt/4O/alA== X-IronPort-AV: E=McAfee;i="6000,8403,9806"; a="158472682" X-IronPort-AV: E=Sophos;i="5.77,481,1596524400"; d="scan'208";a="158472682" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga005.jf.intel.com ([10.7.209.41]) by orsmga106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 15 Nov 2020 19:10:22 -0800 IronPort-SDR: HfjEfZshda7r3mkHVjq4fAkM529KrqPji6U3WS8PetN/rYicYP+fvKBh1E52yc/gMaNVqJJJeJ 2GxChLkk6cyA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.77,481,1596524400"; d="scan'208";a="543424565" Received: from sgsxdev004.isng.intel.com (HELO localhost) ([10.226.88.13]) by orsmga005.jf.intel.com with ESMTP; 15 Nov 2020 19:10:19 -0800 From: "Ramuthevar,Vadivel MuruganX" To: broonie@kernel.org, linux-kernel@vger.kernel.org, linux-spi@vger.kernel.org Cc: linux-mtd@lists.infradead.org, vigneshr@ti.com, p.yadav@ti.com, devicetree@vger.kernel.org, robh+dt@kernel.org, cheol.yong.kim@intel.com, qi-ming.wu@intel.com, Ramuthevar Vadivel Murugan Subject: [PATCH v7 3/6] spi: cadence-quadspi: Add multi-chipselect support for Intel LGM SoC Date: Mon, 16 Nov 2020 11:10:00 +0800 Message-Id: <20201116031003.19062-4-vadivel.muruganx.ramuthevar@linux.intel.com> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20201116031003.19062-1-vadivel.muruganx.ramuthevar@linux.intel.com> References: <20201116031003.19062-1-vadivel.muruganx.ramuthevar@linux.intel.com> Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org From: Ramuthevar Vadivel Murugan Add multiple chipselect support for Intel LGM SoCs, currently QSPI-NOR and QSPI-NAND supported. Signed-off-by: Ramuthevar Vadivel Murugan --- drivers/spi/spi-cadence-quadspi.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/drivers/spi/spi-cadence-quadspi.c b/drivers/spi/spi-cadence-quadspi.c index d12b765e87be..337778f75d5d 100644 --- a/drivers/spi/spi-cadence-quadspi.c +++ b/drivers/spi/spi-cadence-quadspi.c @@ -38,6 +38,7 @@ /* Capabilities */ #define CQSPI_SUPPORTS_OCTAL BIT(0) +#define CQSPI_SUPPORTS_MULTI_CHIPSELECT BIT(1) struct cqspi_st; @@ -75,6 +76,7 @@ struct cqspi_st { bool is_decoded_cs; u32 fifo_depth; u32 fifo_width; + u32 num_chipselect; bool rclk_en; u32 trigger_address; u32 wr_delay; @@ -1049,6 +1051,7 @@ static int cqspi_of_get_flash_pdata(struct platform_device *pdev, static int cqspi_of_get_pdata(struct cqspi_st *cqspi) { + const struct cqspi_driver_platdata *ddata; struct device *dev = &cqspi->pdev->dev; struct device_node *np = dev->of_node; @@ -1070,6 +1073,14 @@ static int cqspi_of_get_pdata(struct cqspi_st *cqspi) return -ENXIO; } + ddata = of_device_get_match_data(dev); + if (ddata->hwcaps_mask & CQSPI_SUPPORTS_MULTI_CHIPSELECT) { + if (of_property_read_u32(np, "num-cs", &cqspi->num_chipselect)) { + dev_err(dev, "couldn't determine number of cs\n"); + return -ENXIO; + } + } + cqspi->rclk_en = of_property_read_bool(np, "cdns,rclk-en"); return 0; @@ -1302,6 +1313,9 @@ static int cqspi_probe(struct platform_device *pdev) cqspi->current_cs = -1; cqspi->sclk = 0; + if (ddata->hwcaps_mask & CQSPI_SUPPORTS_MULTI_CHIPSELECT) + master->num_chipselect = cqspi->num_chipselect; + ret = cqspi_setup_flash(cqspi); if (ret) { dev_err(dev, "failed to setup flash parameters %d\n", ret); @@ -1391,6 +1405,7 @@ static const struct cqspi_driver_platdata am654_ospi = { }; static const struct cqspi_driver_platdata intel_lgm_qspi = { + .hwcaps_mask = CQSPI_SUPPORTS_MULTI_CHIPSELECT, .quirks = CQSPI_DISABLE_DAC_MODE, };