Hello,
I want to run 8 bus witdh eMMC on custom LS1088 based board. I have successfully activated emmc, but it is inited as 4 bus width every time. According to what I see in the datasheet and reference design, I need to configure the pins that are SPI by default in the OVDD section as SDHC_DAT4-7 in the HS Mux. I tried to do this on the DTS side but I am getting a syntax error.
&esdhc {
status = "okay";
compatible = "fsl,ls1088a-esdhc", "fsl,esdhc";
non-removable;
bus-width = <8>;
clock-frequency = <200000000>;
pinctrl-names = "default";
pinctrl-0 = <&esdhc_pins>;
};
&fsl_lsiodev {
esdhc_pins: esdhc-pins {
fsl,pins = <
LS1088A_SIGNAL(PAD_P3, SDHC_CLK, 0x06000049) /* SDHC_CLK */
LS1088A_SIGNAL(PAD_P2, SDHC_CMD, 0x06000049) /* SDHC_CMD */
LS1088A_SIGNAL(PAD_P1, SDHC_DATA0, 0x06000049) /* SDHC_DATA0 */
LS1088A_SIGNAL(PAD_R2, SDHC_DATA1, 0x06000049) /* SDHC_DATA1 */
LS1088A_SIGNAL(PAD_R1, SDHC_DATA2, 0x06000049) /* SDHC_DATA2 */
LS1088A_SIGNAL(PAD_T1, SDHC_DATA3, 0x06000049) /* SDHC_DATA3 */
LS1088A_SIGNAL(PAD_U1, SDHC_DATA4, 0x06000049) /* SDHC_DATA4 */
LS1088A_SIGNAL(PAD_R3, SDHC_DATA5, 0x06000049) /* SDHC_DATA5 */
LS1088A_SIGNAL(PAD_T3, SDHC_DATA6, 0x06000049) /* SDHC_DATA6 */
LS1088A_SIGNAL(PAD_V1, SDHC_DATA7, 0x06000049) /* SDHC_DATA7 */
>;
};
};
What are the steps I should follow to configure it correctly?
mmc0: switch to bus width 8 failed
Is QCVS PinMuxing Tool the right and sufficient solution for me to solve this problem?
