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| author | Hoegeun Kwon <hoegeun.kwon@samsung.com> | 2023-07-26 20:32:55 +0900 |
|---|---|---|
| committer | Hoegeun Kwon <hoegeun.kwon@samsung.com> | 2023-07-26 20:32:55 +0900 |
| commit | f8496c893debead6b5a75912946f048ed8c952a2 (patch) | |
| tree | a9bc0e3c91d29f2b0691e45379fcb9c68d2961ac | |
| parent | a16ffa31a98812de35a1bd8b9c3a19d18e794b26 (diff) | |
| download | linux-starfive-f8496c893debead6b5a75912946f048ed8c952a2.tar.gz linux-starfive-f8496c893debead6b5a75912946f048ed8c952a2.tar.bz2 linux-starfive-f8496c893debead6b5a75912946f048ed8c952a2.zip | |
soc: sifive: ccache: Add delay after flushaccepted/tizen/unified/riscv/20230730.231938
Problems with cache flush at resolutions exceeding FUD and with inno
hdmi driver. It runs a cache flush and requires a delay. So add delay
after cache flush.
Change-Id: Id8b1398dcce04851577912e6c1dfd4a2b580a043
Signed-off-by: Hoegeun Kwon <hoegeun.kwon@samsung.com>
| -rw-r--r-- | drivers/soc/sifive/sifive_ccache.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/soc/sifive/sifive_ccache.c b/drivers/soc/sifive/sifive_ccache.c index 79de3179d066..73c39c349d36 100644 --- a/drivers/soc/sifive/sifive_ccache.c +++ b/drivers/soc/sifive/sifive_ccache.c @@ -9,6 +9,9 @@ #define pr_fmt(fmt) "CCACHE: " fmt #include <linux/debugfs.h> +#ifdef CONFIG_STARFIVE_INNO_HDMI +#include <linux/delay.h> +#endif #include <linux/interrupt.h> #include <linux/of_irq.h> #include <linux/of_address.h> @@ -159,6 +162,13 @@ void sifive_flush64_range(unsigned long start, unsigned long len) writeq(line, ccache_base + SIFIVE_FLUSH64); mb(); } +#ifdef CONFIG_STARFIVE_INNO_HDMI + /* + * Problems with cache flush at resolutions exceeding FUD. + * It runs a cache flush and requires a delay. + */ + udelay(700); +#endif } EXPORT_SYMBOL_GPL(sifive_flush64_range); #endif |