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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2017-10-27 20:38:47 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-10-27 20:38:47 -0700 |
| commit | 90e6872061adb913d28e971d9ed783631e3f225a (patch) | |
| tree | e2d96c6f687ffd152c9a9471bfd89516b30dfb61 /arch/arc/plat-hsdk/platform.c | |
| parent | a0cb2b5c390151837b08e5f7bca4a6ecddbcd39c (diff) | |
| parent | fdbed19697e1aa0f7cb719c11c67f2da26ea7f47 (diff) | |
Merge tag 'arc-4.14-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc
Pull ARC fixes from Vineet Gupta:
- Fixes for HSDK platform
- module build error for !LLSC config
* tag 'arc-4.14-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
ARC: unbork module link errors with !CONFIG_ARC_HAS_LLSC
ARC: [plat-hsdk] Increase SDIO CIU frequency to 50000000Hz
ARC: [plat-hsdk] select CONFIG_RESET_HSDK from Kconfig
Diffstat (limited to 'arch/arc/plat-hsdk/platform.c')
| -rw-r--r-- | arch/arc/plat-hsdk/platform.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/arc/plat-hsdk/platform.c b/arch/arc/plat-hsdk/platform.c index 744e62e58788..fd0ae5e38639 100644 --- a/arch/arc/plat-hsdk/platform.c +++ b/arch/arc/plat-hsdk/platform.c @@ -74,6 +74,10 @@ static void __init hsdk_set_cpu_freq_1ghz(void) pr_err("Failed to setup CPU frequency to 1GHz!"); } +#define SDIO_BASE (ARC_PERIPHERAL_BASE + 0xA000) +#define SDIO_UHS_REG_EXT (SDIO_BASE + 0x108) +#define SDIO_UHS_REG_EXT_DIV_2 (2 << 30) + static void __init hsdk_init_early(void) { /* @@ -90,6 +94,12 @@ static void __init hsdk_init_early(void) writel(1, (void __iomem *) CREG_PAE_UPDATE); /* + * Switch SDIO external ciu clock divider from default div-by-8 to + * minimum possible div-by-2. + */ + iowrite32(SDIO_UHS_REG_EXT_DIV_2, (void __iomem *) SDIO_UHS_REG_EXT); + + /* * Setup CPU frequency to 1GHz. * TODO: remove it after smart hsdk pll driver will be introduced. */ |