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Sat, 25 Nov 2023 03:22:33 -0600 From: Amit Kumar Mahapatra To: , , , , , , , , , , , , CC: , , , , , , , , , , , , , , Amit Kumar Mahapatra Subject: [PATCH v11 08/10] spi: spi-zynqmp-gqspi: Add stacked memories support in GQSPI driver Date: Sat, 25 Nov 2023 14:51:35 +0530 Message-ID: <20231125092137.2948-9-amit.kumar-mahapatra@amd.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20231125092137.2948-1-amit.kumar-mahapatra@amd.com> References: <20231125092137.2948-1-amit.kumar-mahapatra@amd.com> MIME-Version: 1.0 X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DS1PEPF0001709B:EE_|IA1PR12MB7544:EE_ X-MS-Office365-Filtering-Correlation-Id: 55080efe-9a16-4670-e2da-08dbed9819d7 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:SATLEXMB04.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230031)(4636009)(39860400002)(136003)(376002)(346002)(396003)(230922051799003)(451199024)(1800799012)(82310400011)(186009)(64100799003)(46966006)(40470700004)(36840700001)(70206006)(54906003)(70586007)(83380400001)(8936002)(8676002)(81166007)(316002)(82740400003)(110136005)(4326008)(356005)(40480700001)(426003)(5660300002)(40460700003)(336012)(7416002)(2906002)(41300700001)(47076005)(2616005)(36860700001)(1076003)(921008)(26005)(478600001)(86362001)(36756003)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 25 Nov 2023 09:22:52.6666 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 55080efe-9a16-4670-e2da-08dbed9819d7 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=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: DS1PEPF0001709B.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: IA1PR12MB7544 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" 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 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 =20 +#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}; =20 @@ -465,15 +468,17 @@ static void zynqmp_qspi_chipselect(struct spi_device = *qspi, bool is_high) =20 genfifoentry |=3D GQSPI_GENFIFO_MODE_SPI; =20 + 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 |=3D xqspi->genfifobus; if (!is_high) { - if (!spi_get_chipselect(qspi, 0)) { - xqspi->genfifobus =3D GQSPI_GENFIFO_BUS_LOWER; - xqspi->genfifocs =3D GQSPI_GENFIFO_CS_LOWER; - } else { - xqspi->genfifobus =3D GQSPI_GENFIFO_BUS_UPPER; - xqspi->genfifocs =3D GQSPI_GENFIFO_CS_UPPER; - } - genfifoentry |=3D xqspi->genfifobus; genfifoentry |=3D xqspi->genfifocs; genfifoentry |=3D GQSPI_GENFIFO_CS_SETUP; } else { --=20 2.17.1