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clk: renesas: r8a77995: Add RPC clocks

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Describe the various clocks used by the SPI Multi I/O Bus Controller
(RPC-IF) on the R-Car D3 SoC: RPCSRC internal clock, RPC{,D2} clocks
derived from it, and RPC-IF module clock.

The RPCSRC clock divider on R-Car D3 is very similar to the one on R-Car
E3, but uses a different pre-divider for the PLL0 parent.  Add a new
macro to describe it, reusing the existing clock type for R-Car E3.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/3fd1e886b7737cd0e199603bae81d01be9dcf3aa.1648546700.git.geert+renesas@glider.be
This commit is contained in:
Geert Uytterhoeven 2022-03-29 11:44:26 +02:00
parent 2a214607e4
commit 9d18f81b35
2 changed files with 13 additions and 1 deletions
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9
drivers/clk/renesas/r8a77995-cpg-mssr.c
View File

@ -42,6 +42,7 @@ enum clk_ids {
CLK_S2,
CLK_S3,
CLK_SDSRC,
CLK_RPCSRC,
CLK_RINT,
CLK_OCO,
@ -70,6 +71,8 @@ static const struct cpg_core_clk r8a77995_core_clks[] __initconst = {
DEF_FIXED(".s3", CLK_S3, CLK_PLL1, 6, 1),
DEF_FIXED(".sdsrc", CLK_SDSRC, CLK_PLL1, 2, 1),
DEF_FIXED_RPCSRC_D3(".rpcsrc", CLK_RPCSRC, CLK_PLL0, CLK_PLL1),
DEF_DIV6_RO(".r", CLK_RINT, CLK_EXTAL, CPG_RCKCR, 32),
DEF_RATE(".oco", CLK_OCO, 8 * 1000 * 1000),
@ -106,6 +109,11 @@ static const struct cpg_core_clk r8a77995_core_clks[] __initconst = {
DEF_GEN3_SDH("sd0h", R8A77995_CLK_SD0H, CLK_SDSRC, 0x268),
DEF_GEN3_SD("sd0", R8A77995_CLK_SD0, R8A77995_CLK_SD0H, 0x268),
DEF_BASE("rpc", R8A77995_CLK_RPC, CLK_TYPE_GEN3_RPC,
CLK_RPCSRC),
DEF_BASE("rpcd2", R8A77995_CLK_RPCD2, CLK_TYPE_GEN3_RPCD2,
R8A77995_CLK_RPC),
DEF_DIV6P1("canfd", R8A77995_CLK_CANFD, CLK_PLL0D3, 0x244),
DEF_DIV6P1("mso", R8A77995_CLK_MSO, CLK_PLL1D2, 0x014),
@ -174,6 +182,7 @@ static const struct mssr_mod_clk r8a77995_mod_clks[] __initconst = {
DEF_MOD("can-fd", 914, R8A77995_CLK_S3D2),
DEF_MOD("can-if1", 915, R8A77995_CLK_S3D4),
DEF_MOD("can-if0", 916, R8A77995_CLK_S3D4),
DEF_MOD("rpc-if", 917, R8A77995_CLK_RPCD2),
DEF_MOD("i2c3", 928, R8A77995_CLK_S3D2),
DEF_MOD("i2c2", 929, R8A77995_CLK_S3D2),
DEF_MOD("i2c1", 930, R8A77995_CLK_S3D2),

5
drivers/clk/renesas/rcar-gen3-cpg.h
View File

@ -25,7 +25,7 @@ enum rcar_gen3_clk_types {
CLK_TYPE_GEN3_OSC, /* OSC EXTAL predivider and fixed divider */
CLK_TYPE_GEN3_RCKSEL, /* Select parent/divider using RCKCR.CKSEL */
CLK_TYPE_GEN3_RPCSRC,
CLK_TYPE_GEN3_E3_RPCSRC,
CLK_TYPE_GEN3_E3_RPCSRC,/* Select parent/divider using RPCCKCR.DIV */
CLK_TYPE_GEN3_RPC,
CLK_TYPE_GEN3_RPCD2,
@ -62,6 +62,9 @@ enum rcar_gen3_clk_types {
#define DEF_FIXED_RPCSRC_E3(_name, _id, _parent0, _parent1) \
DEF_BASE(_name, _id, CLK_TYPE_GEN3_E3_RPCSRC, \
(_parent0) << 16 | (_parent1), .div = 8)
#define DEF_FIXED_RPCSRC_D3(_name, _id, _parent0, _parent1) \
DEF_BASE(_name, _id, CLK_TYPE_GEN3_E3_RPCSRC, \
(_parent0) << 16 | (_parent1), .div = 5)
struct rcar_gen3_cpg_pll_config {
u8 extal_div;