From patchwork Wed Oct 21 02:55:04 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: 11848191 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 7B77C14B7 for ; Wed, 21 Oct 2020 02:55:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 610BE22251 for ; Wed, 21 Oct 2020 02:55:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2411411AbgJUCz3 (ORCPT ); Tue, 20 Oct 2020 22:55:29 -0400 Received: from mga18.intel.com ([134.134.136.126]:30406 "EHLO mga18.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2411450AbgJUCz0 (ORCPT ); Tue, 20 Oct 2020 22:55:26 -0400 IronPort-SDR: BQ2L2obfg4lnxqWbIqvB/U4mSe6CT3sVQoeHLTw+p9F2N4Nwqr3QPb2IHrWXMUggaGuEQ9qlVy pp/b7jeWhbkw== X-IronPort-AV: E=McAfee;i="6000,8403,9780"; a="155092213" X-IronPort-AV: E=Sophos;i="5.77,400,1596524400"; d="scan'208";a="155092213" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by orsmga106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 20 Oct 2020 19:55:25 -0700 IronPort-SDR: FqDQEjs2WQ4KAoCyVEVES60mNnkc0AkvAVIPVfTaYfuWpnsZnzCKa9GT6xSCEC0aS6TTbZ3okz jPTXVhmAXF1A== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.77,400,1596524400"; d="scan'208";a="522595579" Received: from sgsxdev004.isng.intel.com (HELO localhost) ([10.226.88.13]) by fmsmga006.fm.intel.com with ESMTP; 20 Oct 2020 19:55:22 -0700 From: "Ramuthevar,Vadivel MuruganX" To: vigneshr@ti.com, tudor.ambarus@microchip.com, broonie@kernel.org, linux-kernel@vger.kernel.org, linux-spi@vger.kernel.org, robh+dt@kernel.org Cc: devicetree@vger.kernel.org, miquel.raynal@bootlin.com, simon.k.r.goldschmidt@gmail.com, dinguyen@kernel.org, richard@nod.at, cheol.yong.kim@intel.com, qi-ming.wu@intel.com, Ramuthevar Vadivel Murugan Subject: [PATCH v2 3/6] spi: cadence-quadspi: Add multi-chipselect support for Intel LGM SoC Date: Wed, 21 Oct 2020 10:55:04 +0800 Message-Id: <20201021025507.51001-4-vadivel.muruganx.ramuthevar@linux.intel.com> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20201021025507.51001-1-vadivel.muruganx.ramuthevar@linux.intel.com> References: <20201021025507.51001-1-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 | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/drivers/spi/spi-cadence-quadspi.c b/drivers/spi/spi-cadence-quadspi.c index 3d017b484114..3bf6d3697631 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; @@ -1070,6 +1072,14 @@ static int cqspi_of_get_pdata(struct cqspi_st *cqspi) return -ENXIO; } + if (!cqspi->use_direct_mode) { + if (of_property_read_u32(np, "num-chipselect", + &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; @@ -1307,6 +1317,9 @@ 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); @@ -1396,6 +1409,7 @@ 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, };