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Fri, 10 Mar 2023 11:38:41 -0600 From: Amit Kumar Mahapatra To: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , CC: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Subject: [PATCH V6 13/15] spi: spi-zynqmp-gqspi: Add stacked memories support in GQSPI driver Date: Fri, 10 Mar 2023 23:02:15 +0530 Message-ID: <20230310173217.3429788-14-amit.kumar-mahapatra@amd.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20230310173217.3429788-1-amit.kumar-mahapatra@amd.com> References: <20230310173217.3429788-1-amit.kumar-mahapatra@amd.com> MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: BN8NAM11FT055:EE_|SJ0PR12MB6902:EE_ X-MS-Office365-Filtering-Correlation-Id: 4050f504-4ad2-40e2-763c-08db218e5aee 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)(136003)(346002)(396003)(39860400002)(376002)(451199018)(36840700001)(40470700004)(46966006)(921005)(1191002)(40460700003)(40480700001)(36756003)(82310400005)(86362001)(478600001)(356005)(2616005)(47076005)(426003)(54906003)(8676002)(70206006)(110136005)(70586007)(336012)(186003)(316002)(6666004)(26005)(1076003)(2906002)(7416002)(7406005)(7276002)(7336002)(7366002)(83380400001)(81166007)(36860700001)(8936002)(82740400003)(4326008)(41300700001)(5660300002)(41080700001)(36900700001)(84006005)(2101003)(83996005);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 10 Mar 2023 17:39:09.6300 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 4050f504-4ad2-40e2-763c-08db218e5aee 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: BN8NAM11FT055.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SJ0PR12MB6902 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230310_093915_211554_74757C9A X-CRM114-Status: GOOD ( 11.89 ) X-Mailman-Approved-At: Sun, 19 Mar 2023 09:02:31 -0700 X-BeenThere: linux-amlogic@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-amlogic" Errors-To: linux-amlogic-bounces+linux-amlogic=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 fb2ca9b90eab..3d2b92a88e8a 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 {