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wlan-ap: fix sdhci detect failed during booting

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GL.iNet-Xinfa.Deng 2022-07-14 12:00:52 +08:00
parent f02ef75044
commit 3a6cbe2527
1 changed files with 54 additions and 0 deletions
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54
patches-wlan-ap/0016-ipq807x-fix-sdhci-detect-failed-during-booting.patch Normal file
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@ -0,0 +1,54 @@
From 3d49194ab22815afcaed282e272f0ed78d96c3c5 Mon Sep 17 00:00:00 2001
From: gl-luochongjun <luochongjun@gl-inet.com>
Date: Thu, 14 Jul 2022 11:45:07 +0800
Subject: [PATCH] wlan-ap: fix: sdhci detect failed during booting
---
...x-sdhci-detect-failed-during-booting.patch | 35 +++++++++++++++++++
1 file changed, 35 insertions(+)
create mode 100644 feeds/ipq807x/ipq807x/patches/301-fix-sdhci-detect-failed-during-booting.patch
diff --git a/feeds/ipq807x/ipq807x/patches/301-fix-sdhci-detect-failed-during-booting.patch b/feeds/ipq807x/ipq807x/patches/301-fix-sdhci-detect-failed-during-booting.patch
new file mode 100644
index 00000000..1a8ddce2
--- /dev/null
+++ b/feeds/ipq807x/ipq807x/patches/301-fix-sdhci-detect-failed-during-booting.patch
@@ -0,0 +1,35 @@
+--- a/drivers/mmc/core/core.c
++++ b/drivers/mmc/core/core.c
+@@ -2458,6 +2458,7 @@ EXPORT_SYMBOL(mmc_hw_reset);
+
+ static int mmc_rescan_try_freq(struct mmc_host *host, unsigned freq)
+ {
++ int do_power_cycle = 0;
+ host->f_init = freq;
+
+ #ifdef CONFIG_MMC_DEBUG
+@@ -2466,6 +2467,12 @@ static int mmc_rescan_try_freq(struct mm
+ #endif
+ mmc_power_up(host, host->ocr_avail);
+
++need_power_cycle:
++ if (do_power_cycle) {
++ pr_info("%s: %s: reset power\n",
++ mmc_hostname(host), __func__);
++ mmc_power_cycle(host, host->ocr_avail);
++ }
+ /*
+ * Some eMMCs (with VCCQ always on) may not be reset after power up, so
+ * do a hardware reset if possible.
+@@ -2487,6 +2494,11 @@ static int mmc_rescan_try_freq(struct mm
+ return 0;
+ if (!mmc_attach_sd(host))
+ return 0;
++ else if (!do_power_cycle) {
++ /* some model need to reset power */
++ do_power_cycle = 1;
++ goto need_power_cycle;
++ }
+ if (!mmc_attach_mmc(host))
+ return 0;
+
--
2.25.1