diff options
| author |   Stefan Wahren <wahrenst@gmx.net> | 2019-08-18 18:23:44 +0200 |
|---|---|---|
| committer |   Stephen Boyd <sboyd@kernel.org> | 2019-09-17 09:55:31 -0700 |
| commit | 5c5ba218c6dc1e469b2796345935b8b758162b66 (patch) | |
| tree | ae5862b5432b4ed06595f8ceb7580159556fbc29 /drivers/clk | |
| parent | clk: bcm2835: Add BCM2711_CLOCK_EMMC2 support (diff) | |
| download | linux-dev-5c5ba218c6dc1e469b2796345935b8b758162b66.tar.xz linux-dev-5c5ba218c6dc1e469b2796345935b8b758162b66.zip | |
clk: bcm2835: Mark PLLD_PER as CRITICAL
The VPU firmware assume that the PLLD_PER isn't modified by the ARM core.
Otherwise this could cause firmware lookups. So mark the clock as critical
to avoid this.
Signed-off-by: Stefan Wahren <wahrenst@gmx.net>
Reviewed-by: Eric Anholt <eric@anholt.net>
Diffstat (limited to 'drivers/clk')
| -rw-r--r-- | drivers/clk/bcm/clk-bcm2835.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/clk/bcm/clk-bcm2835.c b/drivers/clk/bcm/clk-bcm2835.c index fdf672a7219e..802e488fd3c3 100644 --- a/drivers/clk/bcm/clk-bcm2835.c +++ b/drivers/clk/bcm/clk-bcm2835.c @@ -1776,6 +1776,11 @@ static const struct bcm2835_clk_desc clk_desc_array[] = { .hold_mask = CM_PLLD_HOLDCORE, .fixed_divider = 1, .flags = CLK_SET_RATE_PARENT), + /* + * VPU firmware assumes that PLLD_PER isn't disabled by the ARM core. + * Otherwise this could cause firmware lookups. That's why we mark + * it as critical. + */ [BCM2835_PLLD_PER] = REGISTER_PLL_DIV( SOC_ALL, .name = "plld_per", @@ -1785,7 +1790,7 @@ static const struct bcm2835_clk_desc clk_desc_array[] = { .load_mask = CM_PLLD_LOADPER, .hold_mask = CM_PLLD_HOLDPER, .fixed_divider = 1, - .flags = CLK_SET_RATE_PARENT), + .flags = CLK_IS_CRITICAL | CLK_SET_RATE_PARENT), [BCM2835_PLLD_DSI0] = REGISTER_PLL_DIV( SOC_ALL, .name = "plld_dsi0", |