hi：
我使用335x GPMC访问nor flash，最后打印 physmap-flash physmap-flash.0: can't request region for resource [mem 0x10000000-0x13ffffff]，请问这是什么错误？
root@am335x-evm:~# insmod physmap.ko
[ 44.858386] physmap-flash 10000000.nor: physmap platform flash device: [mem 0x10000000-0x13ffffff]
[ 44.868065] 10000000.nor: Found 1 x16 devices at 0x0 in 16-bit bank. Manufacturer ID 0x000001 Chip ID 0x002201
[ 44.879102] Amd/Fujitsu Extended Query Table at 0x0040
[ 44.884894] Amd/Fujitsu Extended Query version 1.5.
[ 44.890551] number of CFI chips: 1
[ 44.899719] 2 fixed-partitions partitions found on MTD device 10000000.nor
[ 44.906866] Creating 2 MTD partitions on "10000000.nor":
[ 44.912217] 0x000000000000-0x0000000c0000 : "boot"
[ 44.926634] 0x0000000c0000-0x0000000e0000 : "env1"
[ 44.946516] physmap-flash physmap-flash.0: can't request region for resource [mem 0x10000000-0x13ffffff]
[ 44.956321] physmap-flash: probe of physmap-flash.0 failed with error -16
设备树配置如下（Device tree）：
&gpmc {
status = "okay";
pinctrl-names = "default";
pinctrl-0 = <&gpmc_pins>;
ranges = <0 0 0x08000000 0x1000000>,
<1 0 0x10000000 0x4000000>; /* CS0: 16MB for NAND , CS1: NOR 64M */
nand@0,0 {
compatible = "ti,omap2-nand";
reg = <0 0 4>; /* CS0, offset 0, IO size 4 */
interrupt-parent = <&gpmc>;
interrupts = <0 IRQ_TYPE_NONE>, /* fifoevent */
<1 IRQ_TYPE_NONE>; /* termcount */
rb-gpios = <&gpmc 0 GPIO_ACTIVE_HIGH>; /* gpmc_wait0 */
ti,nand-xfer-type = "prefetch-dma";
ti,nand-ecc-opt = "bch8";
ti,elm-id = <&elm>;
nand-bus-width = <8>;
gpmc,device-width = <1>;
gpmc,sync-clk-ps = <0>;
gpmc,cs-on-ns = <0>;
gpmc,cs-rd-off-ns = <44>;
gpmc,cs-wr-off-ns = <44>;
gpmc,adv-on-ns = <6>;
gpmc,adv-rd-off-ns = <34>;
gpmc,adv-wr-off-ns = <44>;
gpmc,we-on-ns = <0>;
gpmc,we-off-ns = <40>;
gpmc,oe-on-ns = <0>;
gpmc,oe-off-ns = <54>;
gpmc,access-ns = <64>;
gpmc,rd-cycle-ns = <82>;
gpmc,wr-cycle-ns = <82>;
gpmc,bus-turnaround-ns = <0>;
gpmc,cycle2cycle-delay-ns = <0>;
gpmc,clk-activation-ns = <0>;
gpmc,wr-access-ns = <40>;
gpmc,wr-data-mux-bus-ns = <0>;
/* MTD partition table */
/* All SPL-* partitions are sized to minimal length
* which can be independently programmable. For
* NAND flash this is equal to size of erase-block */
#address-cells = <1>;
#size-cells = <1>;
partition@0 {
label = "NAND.SPL";
reg = <0x00000000 0x000020000>;
};
partition@1 {
label = "NAND.SPL.backup1";
reg = <0x00020000 0x00020000>;
};
partition@2 {
label = "NAND.SPL.backup2";
reg = <0x00040000 0x00020000>;
};
partition@3 {
label = "NAND.SPL.backup3";
reg = <0x00060000 0x00020000>;
};
partition@4 {
label = "NAND.u-boot-spl-os";
reg = <0x00080000 0x00040000>;
};
partition@5 {
label = "NAND.u-boot";
reg = <0x000C0000 0x00100000>;
};
partition@6 {
label = "NAND.u-boot-env";
reg = <0x001C0000 0x00020000>;
};
partition@7 {
label = "NAND.u-boot-env.backup1";
reg = <0x001E0000 0x00020000>;
};
partition@8 {
label = "NAND.kernel";
reg = <0x00200000 0x00800000>;
};
partition@9 {
label = "NAND.file-system";
reg = <0x00A00000 0x0F600000>;
};
};
nor@1,0 {
reg = <1 0 0x04000000>;
compatible = "cfi-flash";
//linux,mtd-name = "spansion,s29gl010p11t";
bank-width = <2>;
rb-gpios = <&gpmc 0 GPIO_ACTIVE_HIGH>; /* gpmc_wait0 */
//gpmc,mux-add-data = <2>;
gpmc,sync-clk-ps = <0>;
gpmc,cs-on-ns = <0>;
gpmc,cs-rd-off-ns = <160>;
gpmc,cs-wr-off-ns = <160>;
gpmc,adv-on-ns = <10>;
gpmc,adv-rd-off-ns = <30>;
gpmc,adv-wr-off-ns = <30>;
gpmc,oe-on-ns = <40>;
gpmc,oe-off-ns = <160>;
gpmc,we-on-ns = <40>;
gpmc,we-off-ns = <160>;
gpmc,rd-cycle-ns = <160>;
gpmc,wr-cycle-ns = <160>;
gpmc,access-ns = <150>;
gpmc,page-burst-access-ns = <10>;
gpmc,cycle2cycle-samecsen;
gpmc,cycle2cycle-delay-ns = <20>;
gpmc,wr-data-mux-bus-ns = <70>;
gpmc,wr-access-ns = <80>;
#address-cells = <1>;
#size-cells = <1>;
partition@0 {
label = "boot";
reg = <0x00000000 0x000c0000>; // 768KB
};
partition@1 {
label = "env1";
reg = <0x000c0000 0x00020000>; // 128KB
};
};
};
