Save set clock in mmc_host actual_clock enabling exporting it via debugfs.
This will indicate the precise SD clock in I/O settings rather than only the
sometimes misleading requested clock.
Signed-off-by: Tamás Szűcs <tszucs@xxxxxxxxxxxxx>
---
drivers/mmc/host/renesas_sdhi_core.c | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/drivers/mmc/host/renesas_sdhi_core.c b/drivers/mmc/host/renesas_sdhi_core.c
index 64d3b5fb7fe5..ae842d0b59f9 100644
--- a/drivers/mmc/host/renesas_sdhi_core.c
+++ b/drivers/mmc/host/renesas_sdhi_core.c
@@ -124,7 +124,7 @@ static unsigned int renesas_sdhi_clk_update(struct tmio_mmc_host *host,
{
struct renesas_sdhi *priv = host_to_priv(host);
unsigned int freq, diff, best_freq = 0, diff_min = ~0;
- int i, ret;
+ int i;
/* tested only on R-Car Gen2+ currently; may work for others */
if (!(host->pdata->flags & TMIO_MMC_MIN_RCAR2))
@@ -153,9 +153,11 @@ static unsigned int renesas_sdhi_clk_update(struct tmio_mmc_host *host,
}
}
- ret = clk_set_rate(priv->clk, best_freq);
+ host->mmc->actual_clock =
+ clk_set_rate(priv->clk, best_freq) == 0 ?
+ best_freq : clk_get_rate(priv->clk);
- return ret == 0 ? best_freq : clk_get_rate(priv->clk);
+ return host->mmc->actual_clock;
}
static void renesas_sdhi_set_clock(struct tmio_mmc_host *host,
--
2.11.0
