linux-kernel - [PATCH 04/14] spi: rzv2h-rspi: make clocks chip-specific

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Message-ID: <20251028133151.1487327-5-cosmin-gabriel.tanislav.xa@renesas.com>
Date: Tue, 28 Oct 2025 15:31:35 +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 04/14] spi: rzv2h-rspi: make clocks chip-specific

The Renesas RZ/T2H (R9A09G077) and RZ/N2H (R9A09G087) SoCs have
different clocks compared to RZ/V2H. Set the number of clocks and the
name of the transfer clock in the chip-specific structure to prepare for
adding support for them.

Signed-off-by: Cosmin Tanislav <cosmin-gabriel.tanislav.xa@...esas.com>
Reviewed-by: Fabrizio Castro <fabrizio.castro.jz@...esas.com>
---
 drivers/spi/spi-rzv2h-rspi.c | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/drivers/spi/spi-rzv2h-rspi.c b/drivers/spi/spi-rzv2h-rspi.c
index 7a7a576c17dd..a1f17ec8727b 100644
--- a/drivers/spi/spi-rzv2h-rspi.c
+++ b/drivers/spi/spi-rzv2h-rspi.c
@@ -66,10 +66,11 @@
 #define RSPI_SPSRC_CLEAR	0xfd80
 
 #define RSPI_RESET_NUM		2
-#define RSPI_CLK_NUM		3
 
 struct rzv2h_rspi_info {
+	const char *tclk_name;
 	unsigned int fifo_size;
+	unsigned int num_clks;
 };
 
 struct rzv2h_rspi_priv {
@@ -373,11 +374,11 @@ static int rzv2h_rspi_probe(struct platform_device *pdev)
 		return PTR_ERR(rspi->base);
 
 	ret = devm_clk_bulk_get_all_enabled(dev, &clks);
-	if (ret != RSPI_CLK_NUM)
+	if (ret != rspi->info->num_clks)
 		return dev_err_probe(dev, ret >= 0 ? -EINVAL : ret,
 				     "cannot get clocks\n");
-	for (i = 0; i < RSPI_CLK_NUM; i++) {
-		if (!strcmp(clks[i].id, "tclk")) {
+	for (i = 0; i < rspi->info->num_clks; i++) {
+		if (!strcmp(clks[i].id, rspi->info->tclk_name)) {
 			rspi->tclk = clks[i].clk;
 			break;
 		}
@@ -452,7 +453,9 @@ static void rzv2h_rspi_remove(struct platform_device *pdev)
 }
 
 static const struct rzv2h_rspi_info rzv2h_info = {
+	.tclk_name = "tclk",
 	.fifo_size = 16,
+	.num_clks = 3,
 };
 
 static const struct of_device_id rzv2h_rspi_match[] = {
-- 
2.51.1