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clk: tegra: Implement disable_unused() of tegra_clk_sdmmc_mux_ops

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Implement disable_unused() callback of tegra_clk_sdmmc_mux_ops to fix
imbalanced disabling of the unused MMC clock on Tegra210 Jetson Nano.

Fixes: c592c8a28f ("clk: tegra: Fix refcounting of gate clocks")
Reported-by: Jon Hunter <jonathanh@nvidia.com> # T210 Nano
Tested-by: Jon Hunter <jonathanh@nvidia.com> # T210 Nano
Acked-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Link: https://lore.kernel.org/r/20210717112742.7196-1-digetx@gmail.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
This commit is contained in:
Dmitry Osipenko 2021-07-17 14:27:42 +03:00 committed by Stephen Boyd
parent 4ee107c514
commit 2bcc025ab9
1 changed files with 10 additions and 0 deletions
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10
drivers/clk/tegra/clk-sdmmc-mux.c
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@ -194,6 +194,15 @@ static void clk_sdmmc_mux_disable(struct clk_hw *hw)
gate_ops->disable(gate_hw);
}
static void clk_sdmmc_mux_disable_unused(struct clk_hw *hw)
{
struct tegra_sdmmc_mux *sdmmc_mux = to_clk_sdmmc_mux(hw);
const struct clk_ops *gate_ops = sdmmc_mux->gate_ops;
struct clk_hw *gate_hw = &sdmmc_mux->gate.hw;
gate_ops->disable_unused(gate_hw);
}
static void clk_sdmmc_mux_restore_context(struct clk_hw *hw)
{
struct clk_hw *parent = clk_hw_get_parent(hw);
@ -218,6 +227,7 @@ static const struct clk_ops tegra_clk_sdmmc_mux_ops = {
.is_enabled = clk_sdmmc_mux_is_enabled,
.enable = clk_sdmmc_mux_enable,
.disable = clk_sdmmc_mux_disable,
.disable_unused = clk_sdmmc_mux_disable_unused,
.restore_context = clk_sdmmc_mux_restore_context,
};