Hello All,
My company is planning to implement cardreader using SIM1 PORT1 of IMX6ul interfacing to TDA8035.
When I ran mxc_sim_test.out to test sim functionality, It is giving me following output.
atr[0]= 0x0
Receiving timeout
Error when tx/rx:-1
do you all have any idea,What can be wrong?
For more information, here is our implementation.
Pin configuration as shown in schematic here.
IMX6UL pin settings
I have couple of questions, Have I implemented device tree shown below correctly, according to schematic?
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pinctrl_sim1: sim1grp{
fsl,pins = <
MX6UL_PAD_CSI_DATA01__SIM1_PORT1_SVEN 0x0010 /* SVEN */
MX6UL_PAD_CSI_VSYNC__SIM1_PORT1_CLK 0x0031 /* CLK */
MX6UL_PAD_CSI_DATA00__SIM1_PORT1_RST_B 0x0010 /* RST_B*/
MX6UL_PAD_CSI_DATA02__SIM1_PORT1_TRXD 0xb809 /* IO */
MX6UL_PAD_CSI_HSYNC__SIM1_PORT1_PD 0x1B000 /* PD */
/*MX6UL_PAD_SD1_CMD__GPIO2_IO16 0x1B0B0*/ /* 5V3V */
>;
};
&sim1 {
pinctrl-names ="default";
pinctrl-0 = <&pinctrl_sim1>;
clocks = <&clks IMX6UL_CLK_SIM1>;
clock-names = "sim";
assigned-clocks = <&clks IMX6UL_CLK_SIM_PODF>;
assigned-clock-rates = <240000000>;
/* GPIO_ACTIVE_HIGH/LOW:sim card voltage control
* NCN8025:Vcc = ACTIVE_HIGH?5V:3V
* TDA8035:Vcc = ACTIVE_HIGH?5V:1.8V
*/
pinctrl-assert-gpios = <&gpio2 16 GPIO_ACTIVE_HIGH>;
port = <1>;
sven_low_active;
status = "okay";
};
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As we want to select 5v, I have asserted gpio high as (pinctrl-assert-gpios = <&gpio2 16 GPIO_ACTIVE_HIGH>;) and EN_1.8V as high through IO Expander.
2. Is the above dts setting for asserting gpio2 16 pin is correct?
This is urgent, Could someone help please?
Yuri, igorpadykov, joanxie
Regards,
Asma
