From mboxrd@z Thu Jan 1 00:00:00 1970 From: Subject: [PATCH 1/9] spi: atmel-quadspi: optimize qspi init Date: Wed, 30 Jan 2019 15:08:29 +0000 Message-ID: <20190130150818.24902-2-tudor.ambarus@microchip.com> References: <20190130150818.24902-1-tudor.ambarus@microchip.com> Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Cc: , , , , To: , , , Return-path: In-Reply-To: <20190130150818.24902-1-tudor.ambarus@microchip.com> Content-Language: en-US Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-spi.vger.kernel.org From: Tudor Ambarus Set the QSPI controller in Serial Memory Mode at init and not at each exec_op() call. Signed-off-by: Tudor Ambarus --- drivers/spi/atmel-quadspi.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/spi/atmel-quadspi.c b/drivers/spi/atmel-quadspi.c index ddc712410812..f79b17792a11 100644 --- a/drivers/spi/atmel-quadspi.c +++ b/drivers/spi/atmel-quadspi.c @@ -238,8 +238,6 @@ static int atmel_qspi_exec_op(struct spi_mem *mem, cons= t struct spi_mem_op *op) icr =3D QSPI_ICR_INST(op->cmd.opcode); ifr =3D QSPI_IFR_INSTEN; =20 - qspi_writel(aq, QSPI_MR, QSPI_MR_SMM); - mode =3D find_mode(op); if (mode < 0) return -ENOTSUPP; @@ -381,6 +379,9 @@ static int atmel_qspi_init(struct atmel_qspi *aq) /* Reset the QSPI controller */ qspi_writel(aq, QSPI_CR, QSPI_CR_SWRST); =20 + /* Set the QSPI controller in Serial Memory Mode */ + qspi_writel(aq, QSPI_MR, QSPI_MR_SMM); + /* Enable the QSPI controller */ qspi_writel(aq, QSPI_CR, QSPI_CR_QSPIEN); =20 --=20 2.9.5