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-rw-r--r--src/cpu/samsung/exynos5250/clock_init.c10
1 files changed, 7 insertions, 3 deletions
diff --git a/src/cpu/samsung/exynos5250/clock_init.c b/src/cpu/samsung/exynos5250/clock_init.c
index c94cadfbd4..0989b88bb5 100644
--- a/src/cpu/samsung/exynos5250/clock_init.c
+++ b/src/cpu/samsung/exynos5250/clock_init.c
@@ -416,7 +416,12 @@ void clock_gate(void)
CLK_SPI2_MASK |
CLK_SPI0_MASK);
- /* CLK_GATE_IP_PERIS */
+ /*
+ * CLK_GATE_IP_PERIS
+ * Note: Keep CHIPID_APBIF ungated to ensure reading the product ID
+ * register (PRO_ID) works correctly when the OS kernel determines
+ * which chip it is running on.
+ */
clrbits_le32(&clk->gate_ip_peris, CLK_RTC_MASK |
CLK_TZPC9_MASK |
CLK_TZPC8_MASK |
@@ -427,8 +432,7 @@ void clock_gate(void)
CLK_TZPC3_MASK |
CLK_TZPC2_MASK |
CLK_TZPC1_MASK |
- CLK_TZPC0_MASK |
- CLK_CHIPID_MASK);
+ CLK_TZPC0_MASK);
/* CLK_GATE_BLOCK */
clrbits_le32(&clk->gate_block, CLK_ACP_MASK);