The EMC clock sources for tegra210 currently incorrectly include pll_c2
and pll_c3. However, both of these should have been pll_mb as shown in
the TRM. If tegra210 happens to be configured such that the pll_mb is the
default clock for the EMC, as configured by the bootloader, then this will
cause a system hang on boot. This is because the kernel will disable the
pll_mb when disabling unused clock as it appears to be unused when it is
not.
Also add the additional pll_p clock source for the EMC.
Signed-off-by: Jon Hunter <jonathanh@xxxxxxxxxx>
---
drivers/clk/tegra/clk-tegra210.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/clk/tegra/clk-tegra210.c b/drivers/clk/tegra/clk-tegra210.c
index 58514c44ea83..849be30b52bf 100644
--- a/drivers/clk/tegra/clk-tegra210.c
+++ b/drivers/clk/tegra/clk-tegra210.c
@@ -243,7 +243,8 @@ static unsigned long tegra210_input_freq[] = {
};
static const char *mux_pllmcp_clkm[] = {
- "pll_m", "pll_c", "pll_p", "clk_m", "pll_m_ud", "pll_c2", "pll_c3",
+ "pll_m", "pll_c", "pll_p", "clk_m", "pll_m_ud", "pll_mb", "pll_mb",
+ "pll_p",
};
#define mux_pllmcp_clkm_idx NULL
--
2.1.4
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