From eab292f48eb466396e20dccb48ae729e306377d5 Mon Sep 17 00:00:00 2001 From: Stefan Agner Date: Thu, 18 Apr 2024 18:06:23 +0200 Subject: [PATCH] DROID-N2/C2/C4: Force 40MHz instead of 24MHz as eMMC clock 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 --- ...01-HACK-mmc-meson-gx-limit-to-40MHz.patch} | 19 +++++++++++-------- 1 file changed, 11 insertions(+), 8 deletions(-) rename buildroot-external/board/hardkernel/patches/uboot/{0001-HACK-mmc-meson-gx-limit-to-24MHz.patch => 0001-HACK-mmc-meson-gx-limit-to-40MHz.patch} (58%) diff --git a/buildroot-external/board/hardkernel/patches/uboot/0001-HACK-mmc-meson-gx-limit-to-24MHz.patch b/buildroot-external/board/hardkernel/patches/uboot/0001-HACK-mmc-meson-gx-limit-to-40MHz.patch similarity index 58% rename from buildroot-external/board/hardkernel/patches/uboot/0001-HACK-mmc-meson-gx-limit-to-24MHz.patch rename to buildroot-external/board/hardkernel/patches/uboot/0001-HACK-mmc-meson-gx-limit-to-40MHz.patch index c56843027f5..4e9e0daf067 100644 --- a/buildroot-external/board/hardkernel/patches/uboot/0001-HACK-mmc-meson-gx-limit-to-24MHz.patch +++ b/buildroot-external/board/hardkernel/patches/uboot/0001-HACK-mmc-meson-gx-limit-to-40MHz.patch @@ -1,15 +1,18 @@ -From 11f015e13ef0442b6d2bb734954291abde415f73 Mon Sep 17 00:00:00 2001 -From: Neil Armstrong -Date: Mon, 2 Sep 2019 15:42:04 +0200 -Subject: [PATCH] HACK: mmc: meson-gx: limit to 24MHz +From 820e6f6e3745e988246a1acca4aaacdd759b778f Mon Sep 17 00:00:00 2001 +From: Stefan Agner +Date: Thu, 18 Apr 2024 18:01:54 +0200 +Subject: [PATCH] HACK: mmc: meson-gx: limit to 40MHz -Signed-off-by: Neil Armstrong +This is the limit used by downstream U-Boot for ODROID-N2(+) (odroidg12 +branch). + +Signed-off-by: Stefan Agner --- drivers/mmc/meson_gx_mmc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) 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 +++ b/drivers/mmc/meson_gx_mmc.c @@ -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; cfg->f_min = DIV_ROUND_UP(SD_EMMC_CLKSRC_24M, CLK_MAX_DIV); - 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->name = dev->name; -- -2.43.0 +2.44.0