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clk: renesas: r9a09g056: Add support for xspi mux and divider

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The mux smux2_xspi_clk{0,1} used for selecting spi and spix2 clocks and
pllcm33_xspi divider to select different clock rates. Add support for
both.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/20250627204237.214635-3-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
This commit is contained in:
Lad Prabhakar 2025-06-27 21:42:33 +01:00 committed by Geert Uytterhoeven
parent 15bf4a4617
commit 2a4c0e785a
1 changed files with 24 additions and 1 deletions
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25
drivers/clk/renesas/r9a09g056-cpg.c
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@ -16,7 +16,7 @@
enum clk_ids {
/* Core Clock Outputs exported to DT */
LAST_DT_CORE_CLK = R9A09G056_GBETH_1_CLK_PTP_REF_I,
LAST_DT_CORE_CLK = R9A09G056_SPI_CLK_SPI,
/* External Input Clocks */
CLK_AUDIO_EXTAL,
@ -32,7 +32,13 @@ enum clk_ids {
CLK_PLLGPU,
/* Internal Core Clocks */
CLK_PLLCM33_DIV3,
CLK_PLLCM33_DIV4,
CLK_PLLCM33_DIV5,
CLK_PLLCM33_DIV16,
CLK_SMUX2_XSPI_CLK0,
CLK_SMUX2_XSPI_CLK1,
CLK_PLLCM33_XSPI,
CLK_PLLCLN_DIV2,
CLK_PLLCLN_DIV8,
CLK_PLLCLN_DIV16,
@ -62,6 +68,14 @@ static const struct clk_div_table dtable_1_8[] = {
{0, 0},
};
static const struct clk_div_table dtable_2_16[] = {
{0, 2},
{1, 4},
{2, 8},
{3, 16},
{0, 0},
};
static const struct clk_div_table dtable_2_64[] = {
{0, 2},
{1, 4},
@ -83,6 +97,8 @@ static const char * const smux2_gbe0_rxclk[] = { ".plleth_gbe0", "et0_rxclk" };
static const char * const smux2_gbe0_txclk[] = { ".plleth_gbe0", "et0_txclk" };
static const char * const smux2_gbe1_rxclk[] = { ".plleth_gbe1", "et1_rxclk" };
static const char * const smux2_gbe1_txclk[] = { ".plleth_gbe1", "et1_txclk" };
static const char * const smux2_xspi_clk0[] = { ".pllcm33_div3", ".pllcm33_div4" };
static const char * const smux2_xspi_clk1[] = { ".smux2_xspi_clk0", ".pllcm33_div5" };
static const struct cpg_core_clk r9a09g056_core_clks[] __initconst = {
/* External Clock Inputs */
@ -99,7 +115,14 @@ static const struct cpg_core_clk r9a09g056_core_clks[] __initconst = {
DEF_PLL(".pllgpu", CLK_PLLGPU, CLK_QEXTAL, PLLGPU),
/* Internal Core Clocks */
DEF_FIXED(".pllcm33_div3", CLK_PLLCM33_DIV3, CLK_PLLCM33, 1, 3),
DEF_FIXED(".pllcm33_div4", CLK_PLLCM33_DIV4, CLK_PLLCM33, 1, 4),
DEF_FIXED(".pllcm33_div5", CLK_PLLCM33_DIV5, CLK_PLLCM33, 1, 5),
DEF_FIXED(".pllcm33_div16", CLK_PLLCM33_DIV16, CLK_PLLCM33, 1, 16),
DEF_SMUX(".smux2_xspi_clk0", CLK_SMUX2_XSPI_CLK0, SSEL1_SELCTL2, smux2_xspi_clk0),
DEF_SMUX(".smux2_xspi_clk1", CLK_SMUX2_XSPI_CLK1, SSEL1_SELCTL3, smux2_xspi_clk1),
DEF_CSDIV(".pllcm33_xspi", CLK_PLLCM33_XSPI, CLK_SMUX2_XSPI_CLK1, CSDIV0_DIVCTL3,
dtable_2_16),
DEF_FIXED(".pllcln_div2", CLK_PLLCLN_DIV2, CLK_PLLCLN, 1, 2),
DEF_FIXED(".pllcln_div8", CLK_PLLCLN_DIV8, CLK_PLLCLN, 1, 8),