According to R-Car Gen3 Hardware Manual Rev.1.00, R-Car E3 has the
RCLK Frequency Control Register (RCKCR), which determines the OSC and
RINT predivider values, and selection of the RCLK clock source between
RINT and the On-Chip Oscillator.
Hence change the OSC and RINT clock definitions to use the RCKCR
divider, and add the missing On-Chip Oscillator and RCLK clock source
switching logic.
Signed-off-by: Geert Uytterhoeven <geert+rene...@glider.be>
Reviewed-by: Simon Horman <horms+rene...@verge.net.au>
---
v2:
- Add Reviewed-by,
- Rename "r_int" to ".r", and "oco" to ".oco", as they are internal
clocks.
As Figure 8.1g "Block Diagram of CPG (R-Car E3)" shows 1/61 and 1/4
dividers after the On-Chip Oscillator, I assume the OCO runs at 8 MHz.
---
drivers/clk/renesas/r8a77990-cpg-mssr.c | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)
diff --git a/drivers/clk/renesas/r8a77990-cpg-mssr.c
b/drivers/clk/renesas/r8a77990-cpg-mssr.c
index 9e14f1486fbb93cc..9437219efdd98e34 100644
--- a/drivers/clk/renesas/r8a77990-cpg-mssr.c
+++ b/drivers/clk/renesas/r8a77990-cpg-mssr.c
@@ -44,6 +44,8 @@ enum clk_ids {
CLK_S2,
CLK_S3,
CLK_SDSRC,
+ CLK_RINT,
+ CLK_OCO,
/* Module Clocks */
MOD_CLK_BASE
@@ -72,6 +74,10 @@ static const struct cpg_core_clk r8a77990_core_clks[]
__initconst = {
DEF_FIXED(".s3", CLK_S3, CLK_PLL1, 6, 1),
DEF_FIXED(".sdsrc", CLK_SDSRC, CLK_PLL1, 2, 1),
+ DEF_DIV6_RO(".r", CLK_RINT, CLK_EXTAL, CPG_RCKCR, 32),
+
+ DEF_RATE(".oco", CLK_OCO, 8 * 1000 * 1000),
+
/* Core Clock Outputs */
DEF_FIXED("za2", R8A77990_CLK_ZA2, CLK_PLL0D24, 1, 1),
DEF_FIXED("za8", R8A77990_CLK_ZA8, CLK_PLL0D8, 1, 1),
@@ -100,8 +106,8 @@ static const struct cpg_core_clk r8a77990_core_clks[]
__initconst = {
DEF_FIXED("cl", R8A77990_CLK_CL, CLK_PLL1, 48, 1),
DEF_FIXED("cp", R8A77990_CLK_CP, CLK_EXTAL, 2, 1),
DEF_FIXED("cpex", R8A77990_CLK_CPEX, CLK_EXTAL, 4, 1),
- DEF_FIXED("osc", R8A77990_CLK_OSC, CLK_EXTAL, 384, 1),
- DEF_FIXED("r", R8A77990_CLK_R, CLK_EXTAL, 1536, 1),
+
+ DEF_DIV6_RO("osc", R8A77990_CLK_OSC, CLK_EXTAL, CPG_RCKCR, 8),
DEF_GEN3_PE("s0d6c", R8A77990_CLK_S0D6C, CLK_S0, 6, CLK_PE, 2),
DEF_GEN3_PE("s3d1c", R8A77990_CLK_S3D1C, CLK_S3, 1, CLK_PE, 1),
@@ -111,6 +117,8 @@ static const struct cpg_core_clk r8a77990_core_clks[]
__initconst = {
DEF_DIV6P1("canfd", R8A77990_CLK_CANFD, CLK_PLL0D6, 0x244),
DEF_DIV6P1("csi0", R8A77990_CLK_CSI0, CLK_PLL1D2, 0x00c),
DEF_DIV6P1("mso", R8A77990_CLK_MSO, CLK_PLL1D2, 0x014),
+
+ DEF_GEN3_RCKSEL("r", R8A77990_CLK_R, CLK_RINT, 1, CLK_OCO, 61 * 4),
};
static const struct mssr_mod_clk r8a77990_mod_clks[] __initconst = {
--
2.17.1
