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ODROID-N2/C2/C4: Force 40MHz instead of 24MHz as eMMC clock (#3319)

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It seems that forcing 24MHz clocks is problematic for newer 32GB
Kingston based eMMC modules on ODROID-N2(+). Use what downstream
U-Boot is using as f_max, which is 40MHz.

Fixes: #3227
This commit is contained in:
Stefan Agner 2024-04-24 20:37:14 +02:00 committed by GitHub
parent 82c3e2a859
commit e1b11540a1
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1 changed files with 11 additions and 8 deletions
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19
buildroot-external/board/hardkernel/patches/uboot/0001-HACK-mmc-meson-gx-limit-to-24MHz.patch → buildroot-external/board/hardkernel/patches/uboot/0001-HACK-mmc-meson-gx-limit-to-40MHz.patch
View File

@ -1,15 +1,18 @@
From 11f015e13ef0442b6d2bb734954291abde415f73 Mon Sep 17 00:00:00 2001 From 820e6f6e3745e988246a1acca4aaacdd759b778f Mon Sep 17 00:00:00 2001
From: Neil Armstrong <narmstrong@baylibre.com> From: Stefan Agner <stefan@agner.ch>
Date: Mon, 2 Sep 2019 15:42:04 +0200 Date: Thu, 18 Apr 2024 18:01:54 +0200
Subject: [PATCH] HACK: mmc: meson-gx: limit to 24MHz Subject: [PATCH] HACK: mmc: meson-gx: limit to 40MHz
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> This is the limit used by downstream U-Boot for ODROID-N2(+) (odroidg12
branch).
Signed-off-by: Stefan Agner <stefan@agner.ch>
--- ---
drivers/mmc/meson_gx_mmc.c | 2 +- drivers/mmc/meson_gx_mmc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-) 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/mmc/meson_gx_mmc.c b/drivers/mmc/meson_gx_mmc.c diff --git a/drivers/mmc/meson_gx_mmc.c b/drivers/mmc/meson_gx_mmc.c
index fcf4f03d1e..6ded4b619b 100644 index fcf4f03d1e..c578ac0f74 100644
--- a/drivers/mmc/meson_gx_mmc.c --- a/drivers/mmc/meson_gx_mmc.c
+++ b/drivers/mmc/meson_gx_mmc.c +++ b/drivers/mmc/meson_gx_mmc.c
@@ -279,7 +279,7 @@ static int meson_mmc_probe(struct udevice *dev) @@ -279,7 +279,7 @@ static int meson_mmc_probe(struct udevice *dev)
@ -17,10 +20,10 @@ index fcf4f03d1e..6ded4b619b 100644
MMC_MODE_HS_52MHz | MMC_MODE_HS; MMC_MODE_HS_52MHz | MMC_MODE_HS;
cfg->f_min = DIV_ROUND_UP(SD_EMMC_CLKSRC_24M, CLK_MAX_DIV); cfg->f_min = DIV_ROUND_UP(SD_EMMC_CLKSRC_24M, CLK_MAX_DIV);
- cfg->f_max = 100000000; /* 100 MHz */ - cfg->f_max = 100000000; /* 100 MHz */
+ cfg->f_max = SD_EMMC_CLKSRC_24M; + cfg->f_max = 40000000; /* 40 MHz */
cfg->b_max = 511; /* max 512 - 1 blocks */ cfg->b_max = 511; /* max 512 - 1 blocks */
cfg->name = dev->name; cfg->name = dev->name;
-- --
2.43.0 2.44.0