package/boot/uboot-mediatek/patches/000-mtk-21-mmc-mtk-sd-don-t-ignore-max-frequency-from-device-tr.patch

   1 From 4bdab0ea008113dda4e001ab8d6863945000c1b2 Mon Sep 17 00:00:00 2001
   2 From: Daniel Golle <daniel@makrotopia.org>
   3 Date: Thu, 11 Mar 2021 14:58:26 +0000
   4 Subject: [PATCH 21/21] mmc: mtk-sd: don't ignore max-frequency from device
   5  tree
   6
   7 commit e58e68d9 ("mmc: mtk-sd: assign plat->cfg.f_max with a correct value")
   8 wrongly assumed that plat->cfg.f_max is always unset at the time
   9 mscd_drv_probe() is run. This is not true in case max-frequency being
  10 defined in device tree, as it is then already set by mmc_of_parser()
  11 in msdc_of_to_plat().
  12 Only set plat->cfg.f_max to the default maximum value in case it is
  13 not already set to a sane value.
  14
  15 Signed-off-by: Daniel Golle <daniel@makrotopia.org>
  16 ---
  17  drivers/mmc/mtk-sd.c | 3 ++-
  18  1 file changed, 2 insertions(+), 1 deletion(-)
  19
  20 --- a/drivers/mmc/mtk-sd.c
  21 +++ b/drivers/mmc/mtk-sd.c
  22 @@ -1644,7 +1644,8 @@ static int msdc_drv_probe(struct udevice
  23         if (cfg->f_min < MIN_BUS_CLK)
  24                 cfg->f_min = MIN_BUS_CLK;
  25
  26 -       cfg->f_max = host->src_clk_freq;
  27 +       if (cfg->f_max < cfg->f_min || cfg->f_max > host->src_clk_freq)
  28 +               cfg->f_max = host->src_clk_freq;
  29
  30         cfg->b_max = 1024;
  31         cfg->voltages = MMC_VDD_32_33 | MMC_VDD_33_34;