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Sat, 18 Nov 2023 07:55:22 -0600 Received: from xhdakumarma40u.xilinx.com (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server id 15.1.2507.34 via Frontend Transport; Sat, 18 Nov 2023 07:55:17 -0600 From: Amit Kumar Mahapatra To: , , , , , , CC: , , , , , , , , , , , Amit Kumar Mahapatra Subject: [PATCH v10 6/8] spi: spi-zynqmp-gqspi: Add stacked memories support in GQSPI driver Date: Sat, 18 Nov 2023 19:24:44 +0530 Message-ID: <20231118135446.52783-7-amit.kumar-mahapatra@amd.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20231118135446.52783-1-amit.kumar-mahapatra@amd.com> References: <20231118135446.52783-1-amit.kumar-mahapatra@amd.com> MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: MWH0EPF000989E7:EE_|LV8PR12MB9154:EE_ X-MS-Office365-Filtering-Correlation-Id: 20a9869f-6864-4c58-794d-08dbe83e02c0 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; 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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 9a46b2478f4e..c5d12ddd4ab3 100644 --- a/drivers/spi/spi-zynqmp-gqspi.c +++ b/drivers/spi/spi-zynqmp-gqspi.c @@ -154,6 +154,9 @@ #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}; @@ -465,15 +468,17 @@ 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 {