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| author | Praneeth Bajjuri <praneeth@ti.com> | 2015-02-03 15:45:57 -0600 |
|---|---|---|
| committer | Praneeth Bajjuri <praneeth@ti.com> | 2015-02-03 15:45:57 -0600 |
| commit | 95b851016f79c42a9e8a824c7c81e49015c17820 (patch) | |
| tree | 61e096ff6a654315c40a00eaff682be00c50f861 /drivers/bus/mvebu-mbus.c | |
| parent | c73470c1da26dc543452fbff16a02beb62fec938 (diff) | |
| parent | 94953719b7d459c72eede4a0164d49dfcfc76a94 (diff) | |
Merge branch 'p-ti-linux-3.14.y-android' of git://git.omapzoom.org/kernel/omap into p-ti-linux-3.14.y-android
* 'p-ti-linux-3.14.y-android' of git://git.omapzoom.org/kernel/omap: (216 commits)
usb: dwc3: debugfs: dual role switch through debugfs entries
ARM: DRA7: dts: Add coprocessor nodes for iva
remoteproc/pruss: fix shutdown for manually booted PRU cores
remoteproc/pruss: fix the cleanup path in pru_rproc_probe()
UAPI: Increasing the max FRAME number to 128.
gpio: mcp23s08: Set initial direction and value from DT
firmware: Load VPDMA firmware from kernel
iommu/omap: Fix a sleeping function invocation in atomic context bug
media: ti-vpe: vpe: Add RGB565 and RGB5551 support
media: ti-vpe: vpe: Post next descriptor only for list complete IRQ
media: ti-vpe: vpe: Setup srcdst parameters in streamON
omapdrm: Expose the OMAP pre-multiplied alpha property through DRM
omapdrm: Expose the OMAP global alpha property through DRM
ti_fragments: audio_display: enable BACKLIGHT_GPIO and PANEL_DPI
ti_fragments: audio_display: clean up
arm/dts: am57xx-evm: Add LCD support
backlight: gpio-backlight: Add DT support
arm/dts: dra7xx: fix display compatible strings
OMAPDSS: add missing 'omapdss' prefixes to display drivers
OMAPDSS: add dra7-dss to dt conversion list
...
Signed-off-by: Praneeth Bajjuri <praneeth@ti.com>
Diffstat (limited to 'drivers/bus/mvebu-mbus.c')
| -rw-r--r-- | drivers/bus/mvebu-mbus.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/bus/mvebu-mbus.c b/drivers/bus/mvebu-mbus.c index 372ae72cce3..e990deed2d3 100644 --- a/drivers/bus/mvebu-mbus.c +++ b/drivers/bus/mvebu-mbus.c @@ -181,12 +181,25 @@ static void mvebu_mbus_disable_window(struct mvebu_mbus_state *mbus, } /* Checks whether the given window number is available */ + +/* On Armada XP, 375 and 38x the MBus window 13 has the remap + * capability, like windows 0 to 7. However, the mvebu-mbus driver + * isn't currently taking into account this special case, which means + * that when window 13 is actually used, the remap registers are left + * to 0, making the device using this MBus window unavailable. The + * quick fix for stable is to not use window 13. A follow up patch + * will correctly handle this window. +*/ static int mvebu_mbus_window_is_free(struct mvebu_mbus_state *mbus, const int win) { void __iomem *addr = mbus->mbuswins_base + mbus->soc->win_cfg_offset(win); u32 ctrl = readl(addr + WIN_CTRL_OFF); + + if (win == 13) + return false; + return !(ctrl & WIN_CTRL_ENABLE); } |