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clk: rockchip: rk3399: keep the pclk_vio is CLK_IGNORE_UNUSED and critical

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When we use the MIPI screen, the driver will unprepare and disable
the phy_cfg, it will diable its parent pclk_vio:
dw_mipi_dsi_phy_init
  --> clk_disable_unprepare
    --> clk_disable
      --> clk_core_disable(core->parent)

The pclk_vio supply power for pclk_vio_grf, hence, disable pclk_vio_grf will
cause other drivers failed to operate GRF.

Change-Id: I6d5bd27b9478da09209130f1fd5a62c0d4bb1785
Reported-by: Yakir Yang <ykk@rock-chips.com>
Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
This commit is contained in:
Xing Zheng 2016-04-22 15:26:55 +08:00 committed by Gerrit Code Review
parent 276292803f
commit 03ad390fa7
1 changed files with 2 additions and 1 deletions
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3
drivers/clk/rockchip/clk-rk3399.c
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@ -1077,7 +1077,7 @@ static struct rockchip_clk_branch rk3399_clk_branches[] __initdata = {
COMPOSITE(ACLK_VIO, "aclk_vio", mux_pll_src_cpll_gpll_ppll_p, CLK_IGNORE_UNUSED,
RK3399_CLKSEL_CON(42), 6, 2, MFLAGS, 0, 5, DFLAGS,
RK3399_CLKGATE_CON(11), 10, GFLAGS),
COMPOSITE_NOMUX(PCLK_VIO, "pclk_vio", "aclk_vio", 0,
COMPOSITE_NOMUX(PCLK_VIO, "pclk_vio", "aclk_vio", CLK_IGNORE_UNUSED,
RK3399_CLKSEL_CON(43), 0, 5, DFLAGS,
RK3399_CLKGATE_CON(11), 1, GFLAGS),
@ -1534,6 +1534,7 @@ static const char *const rk3399_cru_critical_clocks[] __initconst = {
"aclk_dmac1_perilp",
"gpll_aclk_perilp0_src",
"gpll_aclk_perihp_src",
"pclk_vio",
};
static const char *const rk3399_pmucru_critical_clocks[] __initconst = {