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Mon, 6 Mar 2023 11:28:17 -0600 From: Amit Kumar Mahapatra To: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , CC: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Subject: [PATCH V5 13/15] spi: spi-zynqmp-gqspi: Add stacked memories support in GQSPI driver Date: Mon, 6 Mar 2023 22:51:07 +0530 Message-ID: <20230306172109.595464-14-amit.kumar-mahapatra@amd.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230306172109.595464-1-amit.kumar-mahapatra@amd.com> References: <20230306172109.595464-1-amit.kumar-mahapatra@amd.com> MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BN8NAM11FT098:EE_|DM6PR12MB4529:EE_ X-MS-Office365-Filtering-Correlation-Id: 3e543323-77a1-40d0-fe52-08db1e683e99 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)(376002)(136003)(346002)(39860400002)(451199018)(36840700001)(46966006)(40470700004)(36860700001)(86362001)(356005)(82740400003)(81166007)(921005)(36756003)(7336002)(7276002)(5660300002)(7366002)(7406005)(2906002)(70206006)(40480700001)(4326008)(70586007)(8936002)(8676002)(7416002)(41300700001)(82310400005)(1191002)(336012)(2616005)(186003)(26005)(83380400001)(47076005)(426003)(40460700003)(110136005)(54906003)(478600001)(316002)(1076003)(6666004)(84006005)(41080700001)(2101003)(83996005)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 06 Mar 2023 17:28:47.7362 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 3e543323-77a1-40d0-fe52-08db1e683e99 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB03.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BN8NAM11FT098.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM6PR12MB4529 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230306_092856_162169_DB8DDC4D X-CRM114-Status: GOOD ( 10.89 ) X-Mailman-Approved-At: Mon, 06 Mar 2023 09:46:16 -0800 X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org 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 --- 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 {