clk: si5341: Update initialization magic

Update the default register settings to include the VCO_RESET_CALCODE
settings (set by the SiLabs ClockBuilder software but not described in
the datasheet). Also update part of the initialization sequence to match
ClockBuilder and the datasheet.

Fixes: 3044a860fd ("clk: Add Si5341/Si5340 driver")
Signed-off-by: Robert Hancock <robert.hancock@calian.com>
Link: https://lore.kernel.org/r/20210325192643.2190069-6-robert.hancock@calian.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

diff --git a/drivers/clk/clk-si5341.c b/drivers/clk/clk-si5341.c
index da40b90..eb22f4f 100644 (file)
--- a/drivers/clk/clk-si5341.c
+++ b/drivers/clk/clk-si5341.c
@@ -350,6 +350,8 @@ static const struct si5341_reg_default si5341_reg_defaults[] = {
        { 0x094A, 0x00 }, /* INx_TO_PFD_EN (disabled) */
        { 0x0A02, 0x00 }, /* Not in datasheet */
        { 0x0B44, 0x0F }, /* PDIV_ENB (datasheet does not mention what it is) */
+       { 0x0B57, 0x10 }, /* VCO_RESET_CALCODE (not described in datasheet) */
+       { 0x0B58, 0x05 }, /* VCO_RESET_CALCODE (not described in datasheet) */
 };
 
 /* Read and interpret a 44-bit followed by a 32-bit value in the regmap */
@@ -1104,7 +1106,7 @@ static const struct si5341_reg_default si5341_preamble[] = {
        { 0x0B25, 0x00 },
        { 0x0502, 0x01 },
        { 0x0505, 0x03 },
-       { 0x0957, 0x1F },
+       { 0x0957, 0x17 },
        { 0x0B4E, 0x1A },
 };