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authorMichael Turquette <mturquette@baylibre.com>2016-04-28 17:18:52 -0700
committerMichael Turquette <mturquette@baylibre.com>2016-06-22 18:01:56 -0700
commit89ef4b6217566f3429a577b84fc67b3a6463e26c (patch)
tree68df57afee068a38440b951da5108163b937edeb /drivers/clk/meson
parent1a695a905c18548062509178b98bc91e67510864 (diff)
clk: meson8b: rectify reg offsets with datasheet
The register offsets in the data sheet are confusing. Document them more thoroughly. Tested-by: Kevin Hilman <khilman@baylibre.com> Signed-off-by: Michael Turquette <mturquette@baylibre.com>
Diffstat (limited to 'drivers/clk/meson')
-rw-r--r--drivers/clk/meson/meson8b-clkc.c15
1 files changed, 12 insertions, 3 deletions
diff --git a/drivers/clk/meson/meson8b-clkc.c b/drivers/clk/meson/meson8b-clkc.c
index 4d057b3e21b2..444ef9414797 100644
--- a/drivers/clk/meson/meson8b-clkc.c
+++ b/drivers/clk/meson/meson8b-clkc.c
@@ -24,10 +24,19 @@
#include "clkc.h"
+/*
+ * Clock controller register offsets
+ *
+ * Register offsets from the HardKernel[0] data sheet are listed in comment
+ * blocks below. Those offsets must be multiplied by 4 before adding them to
+ * the base address to get the right value
+ *
+ * [0] http://dn.odroid.com/S805/Datasheet/S805_Datasheet%20V0.8%2020150126.pdf
+ */
#define MESON8B_REG_CTL0_ADDR 0x0000
-#define MESON8B_REG_SYS_CPU_CNTL1 0x015c
-#define MESON8B_REG_HHI_MPEG 0x0174
-#define MESON8B_REG_MALI 0x01b0
+#define MESON8B_REG_SYS_CPU_CNTL1 0x015c /* 0x57 offset in data sheet */
+#define MESON8B_REG_HHI_MPEG 0x0174 /* 0x5d offset in data sheet */
+#define MESON8B_REG_MALI 0x01b0 /* 0x6c offset in data sheet */
#define MESON8B_REG_PLL_FIXED 0x0280
#define MESON8B_REG_PLL_SYS 0x0300
#define MESON8B_REG_PLL_VID 0x0320