<div dir="ltr">Hi All,<br><div><br></div><div>We are working with Macronix MX25L25635F, and are not able to get spi nor access working from linux(develop-5.10).</div><div>u-boot flash drivers work fine - able to verify the flash contents.</div><div>But linux aspeed-smc seems to be having issues, with read calibration failing all the time</div><div><font face="monospace" size="1">[   1.746960] aspeed-smc 1e620000.spi: Using 50 MHz SPI frequency<br>[   1.753028] aspeed-smc 1e620000.spi: control register: 000b0641<br>[   1.758982] aspeed-smc 1e620000.spi: control register changed to: 00000600<br>[   1.765947] aspeed-smc 1e620000.spi: default control register: 00000600<br>[   1.772810] aspeed-smc 1e620000.spi: mx25l25635e (32768 Kbytes)<br>[   1.778773] aspeed-smc 1e620000.spi: CE0 window [ 0x20000000 - 0x22000000 ] 32MB<br>[   1.786286] aspeed-smc 1e620000.spi: CE1 window [ 0x22000000 - 0x2a000000 ] 128MB<br>[   1.793873] aspeed-smc 1e620000.spi: write control register: 00120602<br>[   1.800341] aspeed-smc 1e620000.spi: <font color="#9900ff">read control register: 203c0641</font><br>[   1.806791] aspeed-smc 1e620000.spi: AHB frequency: 198 MHz<br>[   1.823440] aspeed-smc 1e620000.spi: Trying HCLK/5 [203c0d41] ...<br>[   1.831524] aspeed-smc 1e620000.spi:  * [00080000] 0 HCLK delay, 4ns DI delay : FAIL<br>[   1.841333] aspeed-smc 1e620000.spi:  * [00000000] 0 HCLK delay, 0ns DI delay : FAIL<br>[   1.851152] aspeed-smc 1e620000.spi:  * [00090000] 1 HCLK delay, 4ns DI delay : FAIL<br>[   1.860969] aspeed-smc 1e620000.spi:  * [00010000] 1 HCLK delay, 0ns DI delay : FAIL<br>[   1.870746] aspeed-smc 1e620000.spi:  * [000a0000] 2 HCLK delay, 4ns DI delay : FAIL<br>[   1.880579] aspeed-smc 1e620000.spi:  * [00020000] 2 HCLK delay, 0ns DI delay : FAIL<br>[   1.890435] aspeed-smc 1e620000.spi:  * [000b0000] 3 HCLK delay, 4ns DI delay : FAIL<br>[   1.900301] aspeed-smc 1e620000.spi:  * [00030000] 3 HCLK delay, 0ns DI delay : FAIL<br>[   1.910182] aspeed-smc 1e620000.spi:  * [000c0000] 4 HCLK delay, 4ns DI delay : FAIL<br>[   1.920060] aspeed-smc 1e620000.spi:  * [00040000] 4 HCLK delay, 0ns DI delay : FAIL<br>[   1.929964] aspeed-smc 1e620000.spi:  * [000d0000] 5 HCLK delay, 4ns DI delay : FAIL<br>[   1.939869] aspeed-smc 1e620000.spi:  * [00050000] 5 HCLK delay, 0ns DI delay : FAIL<br>[   1.947796] aspeed-smc 1e620000.spi: Trying HCLK/4 [203c0641] ...<br>[   1.955529] aspeed-smc 1e620000.spi:  * [00008000] 0 HCLK delay, 4ns DI delay : FAIL<br>[   1.964998] aspeed-smc 1e620000.spi:  * [00000000] 0 HCLK delay, 0ns DI delay : FAIL<br>[   1.974483] aspeed-smc 1e620000.spi:  * [00009000] 1 HCLK delay, 4ns DI delay : FAIL<br>[   1.983967] aspeed-smc 1e620000.spi:  * [00001000] 1 HCLK delay, 0ns DI delay : FAIL<br>[   1.993475] aspeed-smc 1e620000.spi:  * [0000a000] 2 HCLK delay, 4ns DI delay : FAIL<br>[   2.002986] aspeed-smc 1e620000.spi:  * [00002000] 2 HCLK delay, 0ns DI delay : FAIL<br>[   2.012508] aspeed-smc 1e620000.spi:  * [0000b000] 3 HCLK delay, 4ns DI delay : FAIL<br>[   2.022035] aspeed-smc 1e620000.spi:  * [00003000] 3 HCLK delay, 0ns DI delay : FAIL<br>[   2.031581] aspeed-smc 1e620000.spi:  * [0000c000] 4 HCLK delay, 4ns DI delay : FAIL<br>[   2.041131] aspeed-smc 1e620000.spi:  * [00004000] 4 HCLK delay, 0ns DI delay : FAIL<br>[   2.050639] aspeed-smc 1e620000.spi:  * [0000d000] 5 HCLK delay, 4ns DI delay : FAIL<br>[   2.060203] aspeed-smc 1e620000.spi:  * [00005000] 5 HCLK delay, 0ns DI delay : FAIL<br>[   2.068116] aspeed-smc 1e620000.spi: <font color="#9900ff">No good frequency, using dumb slow</font><br>[   2.077460] 5 fixed-partitions partitions found on MTD device bmc<br>[   2.083721] Creating 5 MTD partitions on "bmc":<br>[   2.088289] 0x000000000000-0x000000060000 : "u-boot"<br>[   2.096067] 0x000000060000-0x000000080000 : "u-boot-env"<br>[   2.104054] 0x000000080000-0x0000004c0000 : "kernel"<br>[   2.111699] 0x0000004c0000-0x000001c00000 : "rofs"<br>[   2.119091] 0x000001c00000-0x000002000000 : "rwfs"<br></font></div><div><font face="monospace" size="1">...</font></div><div><font face="monospace" size="1">rofs = mtd4 squashfs rwfs = mtd5 jffs2<br><font color="#9900ff">mount: mounting /dev/mtdblock4 on run/initramfs/ro failed: Invalid argument</font><br>[   3.654132] jffs2: Node totlen on flash (0xffffffff) != totlen from node ref (0x0000000c)<br>[   3.685843] jffs2: Node totlen on flash (0xffffffff) != totlen from node ref (0x00000044)<br>[   3.694229] overlayfs: upper fs does not support tmpfile.<br>[   3.699946] jffs2: Node totlen on flash (0xffffffff) != totlen from node ref (0x0000002c)<br>[   3.708309] jffs2: Node totlen on flash (0xffffffff) != totlen from node ref (0x00000044)<br>[   3.716672] overlayfs: upper fs does not support RENAME_WHITEOUT.<br>[   3.722885] overlayfs: upper fs does not support xattr, falling back to index=off and metacopy=off.<br>chroot: can't execute '/bin/sh': No such file or directory</font><br><font face="monospace" size="1"><br>Unable to confirm /sbin/init is an executable non-empty file<br>in merged file system mounted at /root.</font><br></div><div><br></div><div>Found a related discussion on <a href="https://lists.ozlabs.org/pipermail/openbmc/2019-April/015925.html">https://lists.ozlabs.org/pipermail/openbmc/2019-April/015925.html</a>, </div><div>but the workaround mentioned there - to drop read calibration with <i>optimize_read=false </i>didn't help.</div><div>FYI - Able to boot the same image from tftpboot and qemu.</div><div><br></div><div>Has anyone come across similar issue or any suggestions to try out?</div><div><br></div><div>Thanks,</div><div>Shakeeb</div><div><br></div></div>