Commit 8dce89a1c2cf ("clk: tegra: Don't warn for PLL defaults unnecessarily")
changed the tegra210_pllcx_set_defaults() function causing the PLL to
always be reset regardless of whether it is in-use. This function was
changed so that resetting of the PLL will only be skipped if the PLL
is enabled AND 'pllcx->params->defaults_set' is not true. However, the
'pllcx->params->defaults_set' is always true and hence, the PLL is now
always reset. This causes the boot to fail on the Tegra210 Smaug where
the PLL is already enabled and in-use. Fix this by only resetting the
PLL if not in-use and only printing the warning that the defaults are
not set after we have checked the default settings.
Fixes: 8dce89a1c2cf ("clk: tegra: Don't warn for PLL defaults unnecessarily")
Signed-off-by: Jon Hunter <jonathanh@xxxxxxxxxx>
---
drivers/clk/tegra/clk-tegra210.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/clk/tegra/clk-tegra210.c b/drivers/clk/tegra/clk-tegra210.c
index 9897dc55676b..b56a104328fa 100644
--- a/drivers/clk/tegra/clk-tegra210.c
+++ b/drivers/clk/tegra/clk-tegra210.c
@@ -555,12 +555,12 @@ static void tegra210_pllcx_set_defaults(const char *name,
{
pllcx->params->defaults_set = true;
- if (readl_relaxed(clk_base + pllcx->params->base_reg) &
- PLL_ENABLE && !pllcx->params->defaults_set) {
+ if (readl_relaxed(clk_base + pllcx->params->base_reg) & PLL_ENABLE) {
/* PLL is ON: only check if defaults already set */
pllcx_check_defaults(pllcx->params);
- pr_warn("%s already enabled. Postponing set full defaults\n",
- name);
+ if (!pllcx->params->defaults_set)
+ pr_warn("%s already enabled. Postponing set full defaults\n",
+ name);
return;
}
--
2.7.4
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