1 files changed, 11 insertions, 3 deletions

diff --git a/drivers/clk/x86/clk-pmc-atom.c b/drivers/clk/x86/clk-pmc-atom.c
index d977193842df..19174835693b 100644
--- a/drivers/clk/x86/clk-pmc-atom.c
+++ b/drivers/clk/x86/clk-pmc-atom.c
@@ -165,7 +165,7 @@ static const struct clk_ops plt_clk_ops = {
 };
 
 static struct clk_plt *plt_clk_register(struct platform_device *pdev, int id,
-                                        void __iomem *base,
+                                        const struct pmc_clk_data *pmc_data,
                                         const char **parent_names,
                                         int num_parents)
 {
@@ -184,9 +184,17 @@ static struct clk_plt *plt_clk_register(struct platform_device *pdev, int id,
         init.num_parents = num_parents;
 
         pclk->hw.init = &init;
-        pclk->reg = base + PMC_CLK_CTL_OFFSET + id * PMC_CLK_CTL_SIZE;
+        pclk->reg = pmc_data->base + PMC_CLK_CTL_OFFSET + id * PMC_CLK_CTL_SIZE;
         spin_lock_init(&pclk->lock);
 
+        /*
+         * On some systems, the pmc_plt_clocks already enabled by the
+         * firmware are being marked as critical to avoid them being
+         * gated by the clock framework.
+         */
+        if (pmc_data->critical && 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);
@@ -332,7 +340,7 @@ static int plt_clk_probe(struct platform_device *pdev)
                 return PTR_ERR(parent_names);
 
         for (i = 0; i < PMC_CLK_NUM; i++) {
-                data->clks[i] = plt_clk_register(pdev, i, pmc_data->base,
+                data->clks[i] = plt_clk_register(pdev, i, pmc_data,
                                                  parent_names, data->nparents);
                 if (IS_ERR(data->clks[i])) {
                         err = PTR_ERR(data->clks[i]);