Message ID | 20230210193647.4159467-14-amit.kumar-mahapatra@amd.com |
---|---|
State | Superseded |
Headers | show
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Fri, 10 Feb 2023 13:43:00 -0600 Received: from xhdsneeli40.xilinx.com (10.180.168.240) by SATLEXMB03.amd.com (10.181.40.144) with Microsoft SMTP Server id 15.1.2375.34 via Frontend Transport; Fri, 10 Feb 2023 13:42:34 -0600 From: Amit Kumar Mahapatra <amit.kumar-mahapatra@amd.com> To: <broonie@kernel.org>, <miquel.raynal@bootlin.com>, <richard@nod.at>, <vigneshr@ti.com>, <jic23@kernel.org>, <tudor.ambarus@microchip.com>, <pratyush@kernel.org>, <sanju.mehta@amd.com>, <chin-ting_kuo@aspeedtech.com>, <clg@kaod.org>, <kdasu.kdev@gmail.com>, <f.fainelli@gmail.com>, <rjui@broadcom.com>, <sbranden@broadcom.com>, <eajames@linux.ibm.com>, <olteanv@gmail.com>, <han.xu@nxp.com>, <john.garry@huawei.com>, <shawnguo@kernel.org>, <s.hauer@pengutronix.de>, <narmstrong@baylibre.com>, <khilman@baylibre.com>, <matthias.bgg@gmail.com>, <haibo.chen@nxp.com>, <linus.walleij@linaro.org>, <daniel@zonque.org>, <haojian.zhuang@gmail.com>, <robert.jarzmik@free.fr>, <agross@kernel.org>, <bjorn.andersson@linaro.org>, <heiko@sntech.de>, <krzysztof.kozlowski@linaro.org>, <andi@etezian.org>, <mcoquelin.stm32@gmail.com>, <alexandre.torgue@foss.st.com>, <wens@csie.org>, <jernej.skrabec@gmail.com>, <samuel@sholland.org>, <masahisa.kojima@linaro.org>, <jaswinder.singh@linaro.org>, <rostedt@goodmis.org>, <mingo@redhat.com>, <l.stelmach@samsung.com>, <davem@davemloft.net>, <edumazet@google.com>, <kuba@kernel.org>, <pabeni@redhat.com>, <alex.aring@gmail.com>, <stefan@datenfreihafen.org>, <kvalo@kernel.org>, <james.schulman@cirrus.com>, <david.rhodes@cirrus.com>, <tanureal@opensource.cirrus.com>, <rf@opensource.cirrus.com>, <perex@perex.cz>, <tiwai@suse.com>, <npiggin@gmail.com>, <christophe.leroy@csgroup.eu>, <mpe@ellerman.id.au>, <oss@buserror.net>, <windhl@126.com>, <yangyingliang@huawei.com> CC: <git@amd.com>, <linux-spi@vger.kernel.org>, <linux-kernel@vger.kernel.org>, <joel@jms.id.au>, <andrew@aj.id.au>, <radu_nicolae.pirea@upb.ro>, <nicolas.ferre@microchip.com>, <alexandre.belloni@bootlin.com>, <claudiu.beznea@microchip.com>, <bcm-kernel-feedback-list@broadcom.com>, <fancer.lancer@gmail.com>, <kernel@pengutronix.de>, <festevam@gmail.com>, <linux-imx@nxp.com>, <jbrunet@baylibre.com>, <martin.blumenstingl@googlemail.com>, <avifishman70@gmail.com>, <tmaimon77@gmail.com>, <tali.perry1@gmail.com>, <venture@google.com>, <yuenn@google.com>, <benjaminfair@google.com>, <yogeshgaur.83@gmail.com>, <konrad.dybcio@somainline.org>, <alim.akhtar@samsung.com>, <ldewangan@nvidia.com>, <thierry.reding@gmail.com>, <jonathanh@nvidia.com>, <michal.simek@amd.com>, <linux-aspeed@lists.ozlabs.org>, <openbmc@lists.ozlabs.org>, <linux-arm-kernel@lists.infradead.org>, <linux-rpi-kernel@lists.infradead.org>, <linux-amlogic@lists.infradead.org>, <linux-mediatek@lists.infradead.org>, <linux-arm-msm@vger.kernel.org>, <linux-rockchip@lists.infradead.org>, <linux-samsung-soc@vger.kernel.org>, <linux-stm32@st-md-mailman.stormreply.com>, <linux-sunxi@lists.linux.dev>, <linux-tegra@vger.kernel.org>, <netdev@vger.kernel.org>, <linux-wpan@vger.kernel.org>, <libertas-dev@lists.infradead.org>, <linux-wireless@vger.kernel.org>, <linux-mtd@lists.infradead.org>, <lars@metafoo.de>, <Michael.Hennerich@analog.com>, <linux-iio@vger.kernel.org>, <michael@walle.cc>, <palmer@dabbelt.com>, <linux-riscv@lists.infradead.org>, <alsa-devel@alsa-project.org>, <patches@opensource.cirrus.com>, <linuxppc-dev@lists.ozlabs.org>, <amitrkcian2002@gmail.com>, Amit Kumar Mahapatra <amit.kumar-mahapatra@amd.com> Subject: [PATCH v4 13/15] spi: spi-zynqmp-gqspi: Add stacked memories support in GQSPI driver Date: Sat, 11 Feb 2023 01:06:44 +0530 Message-ID: <20230210193647.4159467-14-amit.kumar-mahapatra@amd.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230210193647.4159467-1-amit.kumar-mahapatra@amd.com> References: <20230210193647.4159467-1-amit.kumar-mahapatra@amd.com> MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CO1NAM11FT093:EE_|MN0PR12MB6128:EE_ X-MS-Office365-Filtering-Correlation-Id: f558be0e-726f-4f70-2ccf-08db0b9f0541 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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The original message has been attached to this so you can view it or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: GQSPI supports two chip select CS0 & CS1. Update the driver to assert/de-assert the appropriate chip select as per the bits set in qspi->cs_index_mask. Signed-off-by: Amit Kumar Mahapatra <amit.kumar-mahapatra@amd.com> --- drivers/spi/spi-zynqmp-gqspi.c | 21 +++++++++++++-------- 1 file changed, 13 insertions(+), 8 deletions(-) Content analysis details: (-0.2 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 SPF_PASS SPF: sender matches SPF record -0.0 SPF_HELO_PASS SPF: HELO matches SPF record -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux MTD discussion mailing list <linux-mtd.lists.infradead.org> List-Unsubscribe: <http://lists.infradead.org/mailman/options/linux-mtd>, <mailto:linux-mtd-request@lists.infradead.org?subject=unsubscribe> List-Archive: <http://lists.infradead.org/pipermail/linux-mtd/> List-Post: <mailto:linux-mtd@lists.infradead.org> List-Help: <mailto:linux-mtd-request@lists.infradead.org?subject=help> List-Subscribe: <http://lists.infradead.org/mailman/listinfo/linux-mtd>, <mailto:linux-mtd-request@lists.infradead.org?subject=subscribe> Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-mtd" <linux-mtd-bounces@lists.infradead.org> Errors-To: linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org |
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spi: Add support for stacked/parallel memories
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expand
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diff --git a/drivers/spi/spi-zynqmp-gqspi.c b/drivers/spi/spi-zynqmp-gqspi.c index 319cdd5a0bdc..4759f704bf5c 100644 --- a/drivers/spi/spi-zynqmp-gqspi.c +++ b/drivers/spi/spi-zynqmp-gqspi.c @@ -156,6 +156,9 @@ #define GQSPI_FREQ_100MHZ 100000000 #define GQSPI_FREQ_150MHZ 150000000 +#define GQSPI_SELECT_LOWER_CS BIT(0) +#define GQSPI_SELECT_UPPER_CS BIT(1) + #define SPI_AUTOSUSPEND_TIMEOUT 3000 enum mode_type {GQSPI_MODE_IO, GQSPI_MODE_DMA}; @@ -467,15 +470,17 @@ static void zynqmp_qspi_chipselect(struct spi_device *qspi, bool is_high) genfifoentry |= GQSPI_GENFIFO_MODE_SPI; + if (qspi->cs_index_mask & GQSPI_SELECT_UPPER_CS) { + zynqmp_gqspi_selectslave(xqspi, + GQSPI_SELECT_FLASH_CS_UPPER, + GQSPI_SELECT_FLASH_BUS_LOWER); + } else if (qspi->cs_index_mask & GQSPI_SELECT_LOWER_CS) { + zynqmp_gqspi_selectslave(xqspi, + GQSPI_SELECT_FLASH_CS_LOWER, + GQSPI_SELECT_FLASH_BUS_LOWER); + } + genfifoentry |= xqspi->genfifobus; if (!is_high) { - if (!spi_get_chipselect(qspi, 0)) { - xqspi->genfifobus = GQSPI_GENFIFO_BUS_LOWER; - xqspi->genfifocs = GQSPI_GENFIFO_CS_LOWER; - } else { - xqspi->genfifobus = GQSPI_GENFIFO_BUS_UPPER; - xqspi->genfifocs = GQSPI_GENFIFO_CS_UPPER; - } - genfifoentry |= xqspi->genfifobus; genfifoentry |= xqspi->genfifocs; genfifoentry |= GQSPI_GENFIFO_CS_SETUP; } else {
GQSPI supports two chip select CS0 & CS1. Update the driver to assert/de-assert the appropriate chip select as per the bits set in qspi->cs_index_mask. Signed-off-by: Amit Kumar Mahapatra <amit.kumar-mahapatra@amd.com> --- drivers/spi/spi-zynqmp-gqspi.c | 21 +++++++++++++-------- 1 file changed, 13 insertions(+), 8 deletions(-)