Commit 1175b59611537b0b451e0d1071b1666873a8ec32
1 parent
54f227fdf3
Exists in
smarc_8mm_imx_4.14.98_2.0.0_ga
and in
4 other branches
MLK-21374 mmc: cqhci: clear pending interrupt and halt
On i.MX8MM, we are running Dual Linux OS, with 1st Linux using SD Card as rootfs storage, 2nd Linux using eMMC as rootfs storage. We let the the 1st linux configure power/clock for the 2nd Linux. When the 2nd Linux is booting into rootfs stage, we let the 1st Linux to destroy the 2nd linux, then restart the 1st linux, we met SDHCI dump as following, after we clear the pending interrupt and halt CQCTL, issue gone. [ 1.334594] mmc2: Got command interrupt 0x00000001 even though no command operation was in progress. [ 1.334595] mmc2: sdhci: ============ SDHCI REGISTER DUMP =========== [ 1.334599] mmc2: sdhci: Sys addr: 0xa05dcc00 | Version: 0x00000002 [ 1.340819] lib80211: common routines for IEEE802.11 drivers [ 1.345538] mmc2: sdhci: Blk size: 0x00000200 | Blk cnt: 0x00000000 [ 1.345541] mmc2: sdhci: Argument: 0x00018000 | Trn mode: 0x00000033 [ 1.345543] mmc2: sdhci: Present: 0x01f88008 | Host ctl: 0x00000031 [ 1.345547] mmc2: sdhci: Power: 0x00000002 | Blk gap: 0x00000080 [ 1.357903] mmc2: sdhci: Wake-up: 0x00000008 | Clock: 0x0000003f [ 1.357905] mmc2: sdhci: Timeout: 0x0000008f | Int stat: 0x00000000 [ 1.357908] mmc2: sdhci: Int enab: 0x107f100b | Sig enab: 0x107f100b [ 1.357911] mmc2: sdhci: AC12 err: 0x00000000 | Slot int: 0x00000502 [ 1.370268] mmc2: sdhci: Caps: 0x07eb0000 | Caps_1: 0x0000b400 [ 1.370270] mmc2: sdhci: Cmd: 0x00000d1a | Max curr: 0x00ffffff [ 1.370273] mmc2: sdhci: Resp[0]: 0x00000b00 | Resp[1]: 0xffffffff [ 1.370276] mmc2: sdhci: Resp[2]: 0x328f5903 | Resp[3]: 0x00d00f00 [ 1.382132] mmc2: sdhci: Host ctl2: 0x00000000 [ 1.382135] mmc2: sdhci: ADMA Err: 0x00000000 | ADMA Ptr: 0xa2040208 [ 2.060932] mmc2: Unexpected interrupt 0x00004000. [ 2.065538] mmc2: sdhci: ============ SDHCI REGISTER DUMP =========== [ 2.071720] mmc2: sdhci: Sys addr: 0x00000000 | Version: 0x00000002 [ 2.077902] mmc2: sdhci: Blk size: 0x00000200 | Blk cnt: 0x00000001 [ 2.084083] mmc2: sdhci: Argument: 0x00000000 | Trn mode: 0x00000000 [ 2.090264] mmc2: sdhci: Present: 0x01f88009 | Host ctl: 0x00000011 [ 2.096446] mmc2: sdhci: Power: 0x00000002 | Blk gap: 0x00000080 [ 2.102627] mmc2: sdhci: Wake-up: 0x00000008 | Clock: 0x000010ff [ 2.108809] mmc2: sdhci: Timeout: 0x0000008f | Int stat: 0x00004000 [ 2.114990] mmc2: sdhci: Int enab: 0x007f1003 | Sig enab: 0x007f1003 [ 2.121171] mmc2: sdhci: AC12 err: 0x00000000 | Slot int: 0x00000502 [ 2.127353] mmc2: sdhci: Caps: 0x07eb0000 | Caps_1: 0x0000b400 [ 2.133534] mmc2: sdhci: Cmd: 0x0000371a | Max curr: 0x00ffffff [ 2.139715] mmc2: sdhci: Resp[0]: 0x00000900 | Resp[1]: 0xffffffff [ 2.145896] mmc2: sdhci: Resp[2]: 0x328f5903 | Resp[3]: 0x00d00f00 [ 2.152077] mmc2: sdhci: Host ctl2: 0x00000000 [ 2.156342] mmc2: sdhci: ADMA Err: 0x00000000 | ADMA Ptr: 0x00000000 Signed-off-by: Peng Fan <peng.fan@nxp.com> Reviewed-by: Haibo Chen <haibo.chen@nxp.com>
Showing 1 changed file with 7 additions and 0 deletions Side-by-side Diff
drivers/mmc/host/sdhci-esdhc-imx.c
... | ... | @@ -6,6 +6,8 @@ |
6 | 6 | * Copyright (c) 2010 Pengutronix e.K. |
7 | 7 | * Author: Wolfram Sang <kernel@pengutronix.de> |
8 | 8 | * |
9 | + * Copyright 2019 NXP | |
10 | + * | |
9 | 11 | * This program is free software; you can redistribute it and/or modify |
10 | 12 | * it under the terms of the GNU General Public License as published by |
11 | 13 | * the Free Software Foundation; either version 2 of the License. |
... | ... | @@ -1435,6 +1437,7 @@ |
1435 | 1437 | struct cqhci_host *cq_host; |
1436 | 1438 | int err; |
1437 | 1439 | struct pltfm_imx_data *imx_data; |
1440 | + u32 status; | |
1438 | 1441 | |
1439 | 1442 | host = sdhci_pltfm_init(pdev, &sdhci_esdhc_imx_pdata, |
1440 | 1443 | sizeof(*imx_data)); |
... | ... | @@ -1542,6 +1545,10 @@ |
1542 | 1545 | err = cqhci_init(cq_host, host->mmc, false); |
1543 | 1546 | if (err) |
1544 | 1547 | goto disable_ahb_clk; |
1548 | + | |
1549 | + status = cqhci_readl(cq_host, CQHCI_IS); | |
1550 | + cqhci_writel(cq_host, status, CQHCI_IS); | |
1551 | + cqhci_writel(cq_host, CQHCI_HALT, CQHCI_CTL); | |
1545 | 1552 | } |
1546 | 1553 | |
1547 | 1554 | if (of_id) |