michaelh/zephyr
1
0
Fork 0
Code Releases Activity

boards: arm: mimxrt595_evk: enable APS64 PSRAM on FlexSPI2

Browse source 
Enable APS64 PSRAM on FlexSPI2 bus, running at 200MHz. This PSRAM is
accessible via the memory mapped AHB region for FlexSPI2 when
CONFIG_MEMC=y

Signed-off-by: Daniel DeGrasse <daniel.degrasse@nxp.com>
This commit is contained in:
Daniel DeGrasse 2022-12-20 17:09:34 -06:00 • committed by Carles Cufí
commit abfdbd6e46
2 changed files with 52 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

25
boards/arm/mimxrt595_evk/mimxrt595_evk_cm33-pinctrl.dtsi
View file

@ -73,4 +73,29 @@
};
};
pinmux_flexspi2: pinmux_flexspi2 {
group0 {
pinmux =
<FLEXSPI1_SCLK_PIO4_11>,
<FLEXSPI1_DATA0_PIO4_12>,
<FLEXSPI1_DATA1_PIO4_13>,
<FLEXSPI1_DATA2_PIO4_14>,
<FLEXSPI1_DATA3_PIO4_15>,
<FLEXSPI1_DATA4_PIO5_15>,
<FLEXSPI1_DATA5_PIO5_16>,
<FLEXSPI1_DATA6_PIO5_17>,
<FLEXSPI1_DATA7_PIO5_18>,
<FLEXSPI1_SS0_N_PIO4_18>;
slew-rate = "normal";
input-enable;
drive-strength = "high";
};
group1 {
pinmux = <FLEXSPI1_DQS_PIO4_16>;
slew-rate = "normal";
input-enable;
drive-strength = "high";
bias-pull-down;
};
};
};

27
boards/arm/mimxrt595_evk/mimxrt595_evk_cm33.dts
View file

@ -317,3 +317,30 @@ zephyr_udc0: &usbhs {
};
};
};
&flexspi2 {
status = "okay";
pinctrl-0 = <&pinmux_flexspi2>;
pinctrl-names = "default";
rx-clock-source = <3>;
ahb-prefetch;
ahb-bufferable;
ahb-cacheable;
ahb-read-addr-opt;
aps6408l: aps6408l@0 {
compatible = "nxp,imx-flexspi-aps6408l";
/* APS6408L is 8MB, 64MBit pSRAM */
size = <DT_SIZE_M(8 * 8)>;
reg = <0>;
spi-max-frequency = <198000000>;
status = "okay";
cs-interval-unit = <1>;
cs-interval = <5>;
cs-hold-time = <3>;
cs-setup-time = <3>;
data-valid-time = <1>;
column-space = <0>;
ahb-write-wait-unit = <2>;
ahb-write-wait-interval = <0>;
};
};