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arch/nrf52: add an option to configure QSPI sampling delay for RX data

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The default RX delay value may not be suitable for high QSPI frequencies
This commit is contained in:
raiden00pl
2023-05-25 12:59:02 +02:00
committed by Xiang Xiao
parent 6f87bcc9ac
commit 8943d528fd
2 changed files with 20 additions and 0 deletions
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arch/arm/src/nrf52/Kconfig
+15
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@@ -661,6 +661,21 @@ config NRF52_I2C_MASTER_COPY_BUF_SIZE
endmenu
menu "QSPI Configuration"
if NRF52_QSPI
config NRF52_QSPI_RXDELAY
int "QSPI RX delay"
default 2
range 0 7
---help---
The input serial data sampling delay.
endif # NRF52_QSPI
endmenu # QSPI Configuration
menu "USBDEV Configuration"
endmenu # USBDEV Configuration
arch/arm/src/nrf52/nrf52_qspi.c
+5
View File
@@ -835,6 +835,11 @@ static int nrf52_qspi_hw_initialize(struct nrf52_qspidev_s *priv)
regval |= QSPI_IFCONFIG0_PPSIZE_512;
nrf52_qspi_putreg(priv, NRF52_QSPI_IFCONFIG0_OFFSET, regval);
/* Configure RX delay */
nrf52_qspi_putreg(priv, NRF52_QSPI_IFTIMING_OFFSET,
QSPI_IFTIMING_RXDELAY(CONFIG_NRF52_QSPI_RXDELAY));
/* Enable READY interrupt */
nrf52_qspi_putreg(priv, NRF52_QSPI_INTENSET_OFFSET, QSPI_INT_READY);