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authorStephen Boyd <sboyd@codeaurora.org>2017-07-19 01:23:26 +0200
committerStephen Boyd <sboyd@codeaurora.org>2017-07-19 01:23:26 +0200
commit1f5e4c15d3bb298ed35b3b347fbd6112cd7a5d54 (patch)
tree94f4b1979dcfdd86ffa4fe971b475156bf046bfd
parentclk: mmp: Drop unnecessary static (diff)
parentclk: x86: Do not gate clocks enabled by the firmware (diff)
downloadlinux-1f5e4c15d3bb298ed35b3b347fbd6112cd7a5d54.tar.xz
linux-1f5e4c15d3bb298ed35b3b347fbd6112cd7a5d54.zip
Merge branch 'clk-fixes' into clk-next
* clk-fixes: clk: x86: Do not gate clocks enabled by the firmware clk: gemini: Fix reset regression
-rw-r--r--drivers/clk/clk-gemini.c14
-rw-r--r--drivers/clk/x86/clk-pmc-atom.c7
2 files changed, 21 insertions, 0 deletions
diff --git a/drivers/clk/clk-gemini.c b/drivers/clk/clk-gemini.c
index c391a49aaaff..b4cf2f699a21 100644
--- a/drivers/clk/clk-gemini.c
+++ b/drivers/clk/clk-gemini.c
@@ -237,6 +237,18 @@ static int gemini_reset(struct reset_controller_dev *rcdev,
BIT(GEMINI_RESET_CPU1) | BIT(id));
}
+static int gemini_reset_assert(struct reset_controller_dev *rcdev,
+ unsigned long id)
+{
+ return 0;
+}
+
+static int gemini_reset_deassert(struct reset_controller_dev *rcdev,
+ unsigned long id)
+{
+ return 0;
+}
+
static int gemini_reset_status(struct reset_controller_dev *rcdev,
unsigned long id)
{
@@ -253,6 +265,8 @@ static int gemini_reset_status(struct reset_controller_dev *rcdev,
static const struct reset_control_ops gemini_reset_ops = {
.reset = gemini_reset,
+ .assert = gemini_reset_assert,
+ .deassert = gemini_reset_deassert,
.status = gemini_reset_status,
};
diff --git a/drivers/clk/x86/clk-pmc-atom.c b/drivers/clk/x86/clk-pmc-atom.c
index f99abc1106f0..08ef69945ffb 100644
--- a/drivers/clk/x86/clk-pmc-atom.c
+++ b/drivers/clk/x86/clk-pmc-atom.c
@@ -186,6 +186,13 @@ static struct clk_plt *plt_clk_register(struct platform_device *pdev, int id,
pclk->reg = base + PMC_CLK_CTL_OFFSET + id * PMC_CLK_CTL_SIZE;
spin_lock_init(&pclk->lock);
+ /*
+ * If the clock was already enabled by the firmware mark it as critical
+ * to avoid it being gated by the clock framework if no driver owns it.
+ */
+ if (plt_clk_is_enabled(&pclk->hw))
+ init.flags |= CLK_IS_CRITICAL;
+
ret = devm_clk_hw_register(&pdev->dev, &pclk->hw);
if (ret) {
pclk = ERR_PTR(ret);