Hi,
我在AM5728上用GPMC，同步，CS3，目前的现象是，管脚冲突，但是，我尝试把其它的复用管脚delete-node，似乎没有管用，可以看到mmc3在dtb转出dts来，status 还是okay的。
我把overlay里 A0,A1 注释掉，加载GPMC overlay就不报错了。请帮忙看看什么情况? 谢谢！董峰
pinctrl-single,pins = <
DRA7XX_CORE_IOPAD(0x3440, (PIN_INPUT | MUX_MODE0)) /* gpmc_a0.gpmc_a0 */
DRA7XX_CORE_IOPAD(0x3444, (PIN_INPUT | MUX_MODE0)) /* gpmc_a1.gpmc_a1 */
1. 现象
root@xivi:~# echo -n "tl5728f-gpmc-ad-overlay-xivi.dtbo" > /configfs/device-tree/overlays/full/path
[ 27.105896] pinctrl-single 4a003400.pinmux: pin PIN16 already requested by 4a003400.pinmux; cannot claim for 50000000.gpmc
[ 27.117958] pinctrl-single 4a003400.pinmux: pin-16 (50000000.gpmc) status -22
[ 27.125465] pinctrl-single 4a003400.pinmux: could not request pin 16 (PIN16) from group gpmc_pins_default on device pinctrl-single
[ 27.137395] omap-gpmc 50000000.gpmc: Error applying setting, reverse things back
[ 27.144887] omap-gpmc: probe of 50000000.gpmc failed with error -22
root@xivi:~#
2. tl5728f-evm.dts
#include "tl5728-idk.dts"
/ {
model = "TL5728F-EVM";
chosen {
stdout-path = &uart2;
};
mmc2 {
status = "disable";
};
ocp {
/delete-node/ mmc2;
/delete-node/ mmc3;
/delete-node/ qspi;
/delete-node/ vip1;
/delete-node/ vip2;
/delete-node/ vip3;
/delete-node/ vip4;
/delete-node/ gpio7;
/delete-node/ i2c4;
/delete-node/ uart5;
/delete-node/ mmc@480ad000;
// /delete-node/ gpio@48051000;
};
};
3. 我的GPMC Overlay
/* device tree overlay for GPMC CS3 with address/data-non-multiplexed mode */
/dts-v1/;
/plugin/;
#include <dt-bindings/pinctrl/dra.h>
/ {
fragment@1 {
target = <&dra7_pmx_core>;
__overlay__ {
gpmc_pins_default: gpmc_pins_default {
pinctrl-single,pins = <
DRA7XX_CORE_IOPAD(0x3440, (PIN_INPUT | MUX_MODE0)) /* gpmc_a0.gpmc_a0 */
DRA7XX_CORE_IOPAD(0x3444, (PIN_INPUT | MUX_MODE0)) /* gpmc_a1.gpmc_a1 */
DRA7XX_CORE_IOPAD(0x3448, (PIN_INPUT | MUX_MODE0)) /* gpmc_a2.gpmc_a2 */
DRA7XX_CORE_IOPAD(0x344c, (PIN_INPUT | MUX_MODE0)) /* gpmc_a3.gpmc_a3 */
DRA7XX_CORE_IOPAD(0x3450, (PIN_INPUT | MUX_MODE0)) /* gpmc_a4.gpmc_a4 */
DRA7XX_CORE_IOPAD(0x3454, (PIN_INPUT | MUX_MODE0)) /* gpmc_a5.gpmc_a5 */
DRA7XX_CORE_IOPAD(0x3458, (PIN_INPUT | MUX_MODE0)) /* gpmc_a6.gpmc_a6 */
DRA7XX_CORE_IOPAD(0x345c, (PIN_INPUT | MUX_MODE0)) /* gpmc_a7.gpmc_a7 */
DRA7XX_CORE_IOPAD(0x3460, (PIN_INPUT | MUX_MODE0)) /* gpmc_a8.gpmc_a8 */
DRA7XX_CORE_IOPAD(0x3464, (PIN_INPUT | MUX_MODE0)) /* gpmc_a9.gpmc_a9 */
DRA7XX_CORE_IOPAD(0x3468, (PIN_INPUT | MUX_MODE0)) /* gpmc_a10.gpmc_a10 */
DRA7XX_CORE_IOPAD(0x346c, (PIN_INPUT | MUX_MODE0)) /* gpmc_a11.gpmc_a11 */
DRA7XX_CORE_IOPAD(0x3470, (PIN_INPUT | MUX_MODE0)) /* gpmc_a12.gpmc_a12 */
DRA7XX_CORE_IOPAD(0x3474, (PIN_INPUT | MUX_MODE0)) /* gpmc_a13.gpmc_a13 */
DRA7XX_CORE_IOPAD(0x3478, (PIN_INPUT | MUX_MODE0)) /* gpmc_a14.gpmc_a14 */
DRA7XX_CORE_IOPAD(0x347c, (PIN_INPUT | MUX_MODE0)) /* gpmc_a15.gpmc_a15 */
DRA7XX_CORE_IOPAD(0x3480, (PIN_INPUT | MUX_MODE0)) /* gpmc_a16.gpmc_a16 */
DRA7XX_CORE_IOPAD(0x3484, (PIN_INPUT | MUX_MODE0)) /* gpmc_a17.gpmc_a17 */
DRA7XX_CORE_IOPAD(0x3488, (PIN_INPUT | MUX_MODE0)) /* gpmc_a18.gpmc_a18 */
DRA7XX_CORE_IOPAD(0x34d4, (PIN_INPUT | MUX_MODE0)) /* gpmc_ben1.gpmc_ben1 */
DRA7XX_CORE_IOPAD(0x34d0, (PIN_INPUT | MUX_MODE0)) /* gpmc_ben0.gpmc_ben0 */
DRA7XX_CORE_IOPAD(0x3400, (PIN_INPUT_PULLUP | MUX_MODE0)) /* gpmc_ad0.gpmc_d0 */
DRA7XX_CORE_IOPAD(0x3404, (PIN_INPUT_PULLUP | MUX_MODE0)) /* gpmc_ad1.gpmc_d1 */
DRA7XX_CORE_IOPAD(0x3408, (PIN_INPUT_PULLUP | MUX_MODE0)) /* gpmc_ad2.gpmc_d2 */
DRA7XX_CORE_IOPAD(0x340C, (PIN_INPUT_PULLUP | MUX_MODE0)) /* gpmc_ad3.gpmc_d3 */
DRA7XX_CORE_IOPAD(0x3410, (PIN_INPUT_PULLUP | MUX_MODE0)) /* gpmc_ad4.gpmc_d4 */
DRA7XX_CORE_IOPAD(0x3414, (PIN_INPUT_PULLUP | MUX_MODE0)) /* gpmc_ad5.gpmc_d5 */
DRA7XX_CORE_IOPAD(0x3418, (PIN_INPUT_PULLUP | MUX_MODE0)) /* gpmc_ad6.gpmc_d6 */
DRA7XX_CORE_IOPAD(0x341C, (PIN_INPUT_PULLUP | MUX_MODE0)) /* gpmc_ad7.gpmc_d7 */
DRA7XX_CORE_IOPAD(0x3420, (PIN_INPUT_PULLUP | MUX_MODE0)) /* gpmc_ad8.gpmc_d8 */
DRA7XX_CORE_IOPAD(0x3424, (PIN_INPUT_PULLUP | MUX_MODE0)) /* gpmc_ad9.gpmc_d9 */
DRA7XX_CORE_IOPAD(0x3428, (PIN_INPUT_PULLUP | MUX_MODE0)) /* gpmc_ad10.gpmc_d10 */
DRA7XX_CORE_IOPAD(0x342C, (PIN_INPUT_PULLUP | MUX_MODE0)) /* gpmc_ad11.gpmc_d11 */
DRA7XX_CORE_IOPAD(0x3430, (PIN_INPUT_PULLUP | MUX_MODE0)) /* gpmc_ad12.gpmc_d12 */
DRA7XX_CORE_IOPAD(0x3434, (PIN_INPUT_PULLUP | MUX_MODE0)) /* gpmc_ad13.gpmc_d13 */
DRA7XX_CORE_IOPAD(0x3438, (PIN_INPUT_PULLUP | MUX_MODE0)) /* gpmc_ad14.gpmc_d14 */
DRA7XX_CORE_IOPAD(0x343C, (PIN_INPUT_PULLUP | MUX_MODE0)) /* gpmc_ad15.gpmc_d15 */
DRA7XX_CORE_IOPAD(0x34C0, (PIN_INPUT | MUX_MODE0)) /* gpmc_clk.gpmc_clk */
DRA7XX_CORE_IOPAD(0x34C4, (PIN_OUTPUT_PULLUP | MUX_MODE0)) /* gpmc_advn_ale.gpmc_advn_ale */
DRA7XX_CORE_IOPAD(0x34C8, (PIN_OUTPUT_PULLUP | MUX_MODE0)) /* gpmc_oen_ren.gpmc_oen_ren */
DRA7XX_CORE_IOPAD(0x34CC, (PIN_OUTPUT_PULLUP | MUX_MODE0)) /* gpmc_wen.gpmc_wen */
DRA7XX_CORE_IOPAD(0x34BC, (PIN_OUTPUT | MUX_MODE0)) /* gpmc_cs3.gpmc_cs3 */
DRA7XX_CORE_IOPAD(0x34D8, (PIN_INPUT_PULLUP | MUX_MODE14)) /* gpmc_wait0.gpio2_28 */
>;
};
};
};
fragment@2 {
target = <&gpmc>;
__overlay__ {
depth = <1>; /* only create devices on depth 1 */
status = "okay";
#address-cells = <2>;
#size-cells = <1>;
pinctrl-names = "default";
pinctrl-0 = <&gpmc_pins_default>;
ranges = <3 0 0x01000000 0x01000000>; /* CSn3, 0, addr 0x01000000, size 0x1000000 (16MiB) */
gpmc_device0@0,0 {
compatible = "cfi-flash";
linux,mtd-name= "intel,pf48f6000m0y1be";
#address-cells = <1>;
#size-cells = <1>;
status = "okay";
reg = <3 0 0x01000000>;
/* CONFIG 1 */
bank-width = <2>; /* GPMC_CONFIG1_DEVICESIZE(1) 2: 16bits */
gpmc,mux-add-data = <0>; /* GPMC_CONFIG1_MUXTYPE(0) 2: address-data multiplexing mode */
/* CONFIG 2 */
gpmc,cs-on-ns = <0>;
gpmc,cs-rd-off-ns = <37>;
gpmc,cs-wr-off-ns = <37>;
/* CONFIG 3 */
gpmc,adv-on-ns = <3>;
gpmc,adv-rd-off-ns = <11>;
gpmc,adv-wr-off-ns = <11>;
/* CONFIG 4 */
gpmc,oe-on-ns = <15>;
gpmc,oe-off-ns = <37>;
gpmc,we-on-ns = <15>;
gpmc,we-off-ns = <33>;
/* CONFIG 5 */
gpmc,rd-cycle-ns = <37>;
gpmc,wr-cycle-ns = <37>;
gpmc,access-ns = <33>;
gpmc,page-burst-access-ns = <0>;
/* CONFIG 6 */
gpmc,bus-turnaround-ns = <0>;
gpmc,cycle2cycle-delay-ns = <0>;
gpmc,wr-data-mux-bus-ns = <15>;
gpmc,wr-access-ns = <26>;
gpmc,cycle2cycle-samecsen;
gpmc,cycle2cycle-diffcsen;
};
};
};
};
