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Fri, 10 Feb 2023 13:42:34 -0600 From: Amit Kumar Mahapatra To: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , 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; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:SATLEXMB03.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230025)(4636009)(396003)(346002)(376002)(136003)(39860400002)(451199018)(36840700001)(40470700004)(46966006)(1191002)(82310400005)(110136005)(36860700001)(2616005)(83380400001)(36756003)(2906002)(54906003)(356005)(921005)(70586007)(336012)(4326008)(70206006)(26005)(8676002)(478600001)(1076003)(186003)(40460700003)(6666004)(41300700001)(8936002)(47076005)(82740400003)(81166007)(316002)(426003)(7416002)(40480700001)(7366002)(7276002)(5660300002)(7406005)(86362001)(7336002)(83996005)(36900700001)(84006005)(2101003)(41080700001);DIR:OUT;SFP:1101; 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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 --- drivers/spi/spi-zynqmp-gqspi.c | 21 +++++++++++++-------- 1 file changed, 13 insertions(+), 8 deletions(-) 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 {