linux-kernel - [PATCH 01/14] clk: renesas: r9a09g077: add SPI module clocks

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Message-ID: <20251028133151.1487327-2-cosmin-gabriel.tanislav.xa@renesas.com>
Date: Tue, 28 Oct 2025 15:31:32 +0200
From: Cosmin Tanislav <cosmin-gabriel.tanislav.xa@...esas.com>
To: 
Cc: Fabrizio Castro <fabrizio.castro.jz@...esas.com>,
	Mark Brown <broonie@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Geert Uytterhoeven <geert+renesas@...der.be>,
	Magnus Damm <magnus.damm@...il.com>,
	Michael Turquette <mturquette@...libre.com>,
	Stephen Boyd <sboyd@...nel.org>,
	Philipp Zabel <p.zabel@...gutronix.de>,
	linux-spi@...r.kernel.org,
	linux-renesas-soc@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-clk@...r.kernel.org,
	Cosmin Tanislav <cosmin-gabriel.tanislav.xa@...esas.com>
Subject: [PATCH 01/14] clk: renesas: r9a09g077: add SPI module clocks

The Renesas RZ/T2H (R9A09G077) and RZ/N2H (R9A09G087) SoCs have four SPI
peripherals, each with their own clock divider, which divides PLL4 by
either 24, 25, 30 or 32, similar to the SCI peripheral.

The dividers feed into the usual module clocks.

Add them all.

Signed-off-by: Cosmin Tanislav <cosmin-gabriel.tanislav.xa@...esas.com>
Reviewed-by: Fabrizio Castro <fabrizio.castro.jz@...esas.com>
---
 drivers/clk/renesas/r9a09g077-cpg.c | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/drivers/clk/renesas/r9a09g077-cpg.c b/drivers/clk/renesas/r9a09g077-cpg.c
index 79083165537c..0f61e0f09697 100644
--- a/drivers/clk/renesas/r9a09g077-cpg.c
+++ b/drivers/clk/renesas/r9a09g077-cpg.c
@@ -54,6 +54,11 @@
 #define DIVSCI3ASYNC	CONF_PACK(SCKCR3, 12, 2)
 #define DIVSCI4ASYNC	CONF_PACK(SCKCR3, 14, 2)
 
+#define DIVSPI0ASYNC	CONF_PACK(SCKCR3, 0, 2)
+#define DIVSPI1ASYNC	CONF_PACK(SCKCR3, 2, 2)
+#define DIVSPI2ASYNC	CONF_PACK(SCKCR3, 4, 2)
+#define DIVSPI3ASYNC	CONF_PACK(SCKCR2, 16, 2)
+
 #define SEL_PLL		CONF_PACK(SCKCR, 22, 1)
 
 
@@ -94,6 +99,10 @@ enum clk_ids {
 	CLK_SCI3ASYNC,
 	CLK_SCI4ASYNC,
 	CLK_SCI5ASYNC,
+	CLK_SPI0ASYNC,
+	CLK_SPI1ASYNC,
+	CLK_SPI2ASYNC,
+	CLK_SPI3ASYNC,
 
 	/* Module Clocks */
 	MOD_CLK_BASE,
@@ -154,6 +163,15 @@ static const struct cpg_core_clk r9a09g077_core_clks[] __initconst = {
 	DEF_DIV(".sci5async", CLK_SCI5ASYNC, CLK_PLL4D1, DIVSCI5ASYNC,
 		dtable_24_25_30_32),
 
+	DEF_DIV(".spi0async", CLK_SPI0ASYNC, CLK_PLL4D1, DIVSPI0ASYNC,
+		dtable_24_25_30_32),
+	DEF_DIV(".spi1async", CLK_SPI1ASYNC, CLK_PLL4D1, DIVSPI1ASYNC,
+		dtable_24_25_30_32),
+	DEF_DIV(".spi2async", CLK_SPI2ASYNC, CLK_PLL4D1, DIVSPI2ASYNC,
+		dtable_24_25_30_32),
+	DEF_DIV(".spi3async", CLK_SPI3ASYNC, CLK_PLL4D1, DIVSPI3ASYNC,
+		dtable_24_25_30_32),
+
 	/* Core output clk */
 	DEF_DIV("CA55C0", R9A09G077_CLK_CA55C0, CLK_SEL_CLK_PLL0, DIVCA55C0,
 		dtable_1_2),
@@ -192,6 +210,9 @@ static const struct mssr_mod_clk r9a09g077_mod_clks[] __initconst = {
 	DEF_MOD("sci4fck", 12, CLK_SCI4ASYNC),
 	DEF_MOD("iic0", 100, R9A09G077_CLK_PCLKL),
 	DEF_MOD("iic1", 101, R9A09G077_CLK_PCLKL),
+	DEF_MOD("spi0", 104, CLK_SPI0ASYNC),
+	DEF_MOD("spi1", 105, CLK_SPI1ASYNC),
+	DEF_MOD("spi2", 106, CLK_SPI2ASYNC),
 	DEF_MOD("adc0", 206, R9A09G077_CLK_PCLKH),
 	DEF_MOD("adc1", 207, R9A09G077_CLK_PCLKH),
 	DEF_MOD("adc2", 225, R9A09G077_CLK_PCLKM),
@@ -204,6 +225,7 @@ static const struct mssr_mod_clk r9a09g077_mod_clks[] __initconst = {
 	DEF_MOD("gmac2", 417, R9A09G077_CLK_PCLKAM),
 	DEF_MOD("sci5fck", 600, CLK_SCI5ASYNC),
 	DEF_MOD("iic2", 601, R9A09G077_CLK_PCLKL),
+	DEF_MOD("spi3", 602, CLK_SPI3ASYNC),
 	DEF_MOD("sdhi0", 1212, R9A09G077_CLK_PCLKAM),
 	DEF_MOD("sdhi1", 1213, R9A09G077_CLK_PCLKAM),
 };
-- 
2.51.1