Hello,
We are using am3352 in our design with kernel 4.14.67 and U-Boot version 2019.01 from TI SDK.
We have been working with 1GByte nand flash, but now we need bigger memories, so we have included in our design a 4GByte nand flash (it has two different CS, one for each 2GByte).
Configuring the first 2GByte is working fine, but no way with the second CS:
- First we changed GPMC_MEM_END in omap-gpmc.c from 0x3FFFFFFF to 0xFFFFFFFF
- We changed device-tree file as follow:
nandflash_pins_default: nandflash_pins_default {
pinctrl-single,pins = <
0x00 (PIN_INPUT | MUX_MODE0) /* gpmc_ad0.gpmc_ad0 */
0x04 (PIN_INPUT | MUX_MODE0) /* gpmc_ad1.gpmc_ad1 */
0x08 (PIN_INPUT | MUX_MODE0) /* gpmc_ad2.gpmc_ad2 */
0x0c (PIN_INPUT | MUX_MODE0) /* gpmc_ad3.gpmc_ad3 */
0x10 (PIN_INPUT | MUX_MODE0) /* gpmc_ad4.gpmc_ad4 */
0x14 (PIN_INPUT | MUX_MODE0) /* gpmc_ad5.gpmc_ad5 */
0x18 (PIN_INPUT | MUX_MODE0) /* gpmc_ad6.gpmc_ad6 */
0x1c (PIN_INPUT | MUX_MODE0) /* gpmc_ad7.gpmc_ad7 */
0x70 (PIN_INPUT | MUX_MODE0) /* gpmc_wait0.gpmc_wait0 */
0x8c (PIN_INPUT | MUX_MODE2) /* (V12) gpmc_clk.gpmc_wait1 */
0x7c (PIN_OUTPUT | MUX_MODE0) /* gpmc_csn0.gpmc_csn0 */
0x78 (PIN_OUTPUT | MUX_MODE2) /* (U18) gpmc_be1n.gpmc_csn6 */
0x90 (PIN_OUTPUT | MUX_MODE0) /* gpmc_advn_ale.gpmc_advn_ale */
0x94 (PIN_OUTPUT | MUX_MODE0) /* gpmc_oen_ren.gpmc_oen_ren */
0x98 (PIN_OUTPUT | MUX_MODE0) /* gpmc_wen.gpmc_wen */
0x9c (PIN_OUTPUT | MUX_MODE0) /* gpmc_be0n_cle.gpmc_be0n_cle */
>;
}; /* nandflash_pins_default */
&gpmc {
status = "okay";
pinctrl-names = "default";
pinctrl-0 = <&nandflash_pins_default>;
ranges = <0 0 0x08000000 0x80000000>, /* CS0, NAND, 2GB max */
<6 0 0x88000000 0x80000000>; /* CS6, NAND, 2GB max */
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-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,wait-on-read = "true";
gpmc,wait-on-write = "true";
gpmc,bus-turnaround-ns = <0>;
gpmc,cycle2cycle-delay-ns = <0>;
gpmc,clk-activation-ns = <0>;
gpmc,wait-monitoring-ns = <0>;
gpmc,wr-access-ns = <40>;
gpmc,wr-data-mux-bus-ns = <0>;
#address-cells = <1>;
#size-cells = <1>;
/* 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
*/
partition@0 {
label = "NAND.SPL";
reg = <0x00000000 0x00080000>;
};
partition@1 {
label = "NAND.SPL.backup1";
reg = <0x00080000 0x00080000>;
};
partition@2 {
label = "NAND.SPL.backup2";
reg = <0x00100000 0x00080000>;
};
partition@3 {
label = "NAND.SPL.backup3";
reg = <0x00180000 0x00080000>;
};
partition@4 {
label = "NAND.u-boot-spl-os";
reg = <0x00200000 0x00080000>;
};
partition@5 {
label = "NAND.u-boot";
reg = <0x00280000 0x00100000>;
};
partition@6 {
label = "NAND.u-boot-env";
reg = <0x00380000 0x00080000>;
};
partition@7 {
label = "NAND.u-boot-env.backup1";
reg = <0x00400000 0x00080000>;
};
partition@8 {
label = "NAND.kernel";
reg = <0x00480000 0x01000000>;
};
partition@9 {
label = "NAND.file-system.backup1";
reg = <0x01480000 0x04000000>;
};
partition@10 {
label = "NAND.file-system";
reg = <0x05480000 0x00>;
};
}; /* NAND@0,0 */
nand@1,0 {
compatible = "ti,omap2-nand";
reg = <6 0 4>; /* CS6, offset 0, IO size 4 */
interrupt-parent = <&gpmc>;
interrupts = <0 IRQ_TYPE_NONE>, /* fifoevent */
<1 IRQ_TYPE_NONE>; /* termcount */
rb-gpios = <&gpmc 1 GPIO_ACTIVE_HIGH>; /* gpmc_wait1 */
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,wait-on-read = "true";
gpmc,wait-on-write = "true";
gpmc,bus-turnaround-ns = <0>;
gpmc,cycle2cycle-delay-ns = <0>;
gpmc,clk-activation-ns = <0>;
gpmc,wait-monitoring-ns = <0>;
gpmc,wr-access-ns = <40>;
gpmc,wr-data-mux-bus-ns = <0>;
#address-cells = <1>;
#size-cells = <1>;
/* MTD partition table */
partition@11 {
label = "NAND.data-storage";
reg = <0x0000000 0x00>;
};
}; /* NAND@1,0 */
}; /* gpmc */
But when starting kernel I get this error
omap2-nand 88000000.nand: can't request region for resource [mem 0x88000000-0x88000003]
and after this a segmentation fault and a restart.
Could you please help us with this issue?
Best regards
Angel
