mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-20 22:23:27 +00:00
2b1c6b21b5
As usual these patches were extracted and rebased from the raspberry pi repo: https://github.com/raspberrypi/linux/tree/rpi-4.4.y Also adds support for Raspberry Pi Compute Module 3 (untested). Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
64 lines
2.1 KiB
Diff
64 lines
2.1 KiB
Diff
From 0ca1a9040cff3ace3d7fce5cdd83f1cbaa8da50c Mon Sep 17 00:00:00 2001
|
|
From: Phil Elwell <phil@raspberrypi.org>
|
|
Date: Fri, 2 Sep 2016 17:21:42 +0100
|
|
Subject: [PATCH] bcm2835-sdhost: Don't exit cmd wait loop on error
|
|
|
|
The FAIL flag can be set in the CMD register before command processing
|
|
is complete, leading to spurious "failed to complete" errors. This has
|
|
the effect of promoting harmless CRC7 errors during CMD1 processing
|
|
into errors that can delay and even prevent booting.
|
|
|
|
Also:
|
|
1) Convert the last KERN_ERROR message in the register dumping to
|
|
KERN_INFO.
|
|
2) Remove an unnecessary reset call from bcm2835_sdhost_add_host.
|
|
|
|
See: https://github.com/raspberrypi/linux/pull/1492
|
|
|
|
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
|
|
---
|
|
drivers/mmc/host/bcm2835-sdhost.c | 10 +++-------
|
|
1 file changed, 3 insertions(+), 7 deletions(-)
|
|
|
|
--- a/drivers/mmc/host/bcm2835-sdhost.c
|
|
+++ b/drivers/mmc/host/bcm2835-sdhost.c
|
|
@@ -373,7 +373,7 @@ static void bcm2835_sdhost_dumpregs(stru
|
|
pr_info("%s: SDRSP2 0x%08x\n",
|
|
mmc_hostname(host->mmc),
|
|
bcm2835_sdhost_read(host, SDRSP2));
|
|
- pr_err("%s: SDRSP3 0x%08x\n",
|
|
+ pr_info("%s: SDRSP3 0x%08x\n",
|
|
mmc_hostname(host->mmc),
|
|
bcm2835_sdhost_read(host, SDRSP3));
|
|
pr_info("%s: SDHSTS 0x%08x\n",
|
|
@@ -1183,9 +1183,8 @@ static void bcm2835_sdhost_finish_comman
|
|
retries = 1; // We've already waited long enough this time
|
|
}
|
|
|
|
- retries = host->cmd_quick_poll_retries;
|
|
for (sdcmd = bcm2835_sdhost_read(host, SDCMD);
|
|
- (sdcmd & SDCMD_NEW_FLAG) && !(sdcmd & SDCMD_FAIL_FLAG) && retries;
|
|
+ (sdcmd & SDCMD_NEW_FLAG) && retries;
|
|
retries--) {
|
|
cpu_relax();
|
|
sdcmd = bcm2835_sdhost_read(host, SDCMD);
|
|
@@ -1208,8 +1207,7 @@ static void bcm2835_sdhost_finish_comman
|
|
usleep_range(1, 10);
|
|
spin_lock_irqsave(&host->lock, *irq_flags);
|
|
sdcmd = bcm2835_sdhost_read(host, SDCMD);
|
|
- if (!(sdcmd & SDCMD_NEW_FLAG) ||
|
|
- (sdcmd & SDCMD_FAIL_FLAG))
|
|
+ if (!(sdcmd & SDCMD_NEW_FLAG))
|
|
break;
|
|
}
|
|
}
|
|
@@ -1892,8 +1890,6 @@ int bcm2835_sdhost_add_host(struct bcm28
|
|
|
|
mmc = host->mmc;
|
|
|
|
- bcm2835_sdhost_reset_internal(host);
|
|
-
|
|
mmc->f_max = host->max_clk;
|
|
mmc->f_min = host->max_clk / SDCDIV_MAX_CDIV;
|
|
|