• Shengjiu Wang's avatar
    clk: imx6: Add SPDIF_GCLK clock in clock tree · 84a87250
    Shengjiu Wang authored
    Correct SPDIF clock setting issue in clock tree, the SPDIF_GCLK is also
    one clock of SPDIF, which is missed before.
    
    We found an issue that imx can't enter low power mode with spdif
    if IMX6x_CLK_SPDIF is used as the core clock of spdif. Because
    spdif driver will register IMX6x_CLK_SPDIF clock to regmap, regmap will do
    clk_prepare in init function, then IMX6x_CLK_SPDIF clock is prepared in probe,
    so its parent clock (PLL clock) is prepared, the prepare operation of
    PLL clock is to enable the clock. But I.MX needs all PLL clock is disabled,
    then it can enter low power mode.
    
    So we can't use IMX6x_CLK_SPDIF as the core clock of spdif, the correct spdif
    core clock is SPDIF_GCLK, which share same gate bit with IMX6x_CLK_SPDIF clock.
    SPDIF_GCLK's parent clock is ipg clock.
    Signed-off-by: default avatarShengjiu Wang <shengjiu.wang@freescale.com>
    Signed-off-by: default avatarShawn Guo <shawnguo@kernel.org>
    84a87250
imx6qdl-clock.h 8.83 KB