[v3,06/12] clk: samsung: exynosautov9: add cmu_busmc clock support

Commit Message

Chanho Park May 4, 2022, 7:51 a.m. UTC

CMU_BUSMC is responsible to control clocks of BLK_BUSMC which represents
Data/Peri buses. Most clocks except PDMA/SPDMA are not necessary to
be controlled by HLOS. So, this adds PDMA/SPDMA gate clocks.

Reviewed-by: Krzysztof Kozlowski <[e-mail]>
Signed-off-by: Chanho Park <[e-mail]>
---
 drivers/clk/samsung/clk-exynosautov9.c | 55 ++++++++++++++++++++++++++
 1 file changed, 55 insertions(+)

Comments

Chanwoo Choi May 4, 2022, 9:45 a.m. UTC | #1

Hi Chanho,

On 22. 5. 4. 16:51, Chanho Park wrote:
> CMU_BUSMC is responsible to control clocks of BLK_BUSMC which represents
> Data/Peri buses. Most clocks except PDMA/SPDMA are not necessary to
> be controlled by HLOS. So, this adds PDMA/SPDMA gate clocks.
> 
> Reviewed-by: Krzysztof Kozlowski <[e-mail]>
> Signed-off-by: Chanho Park <[e-mail]>
> ---
>   drivers/clk/samsung/clk-exynosautov9.c | 55 ++++++++++++++++++++++++++
>   1 file changed, 55 insertions(+)
> 

(snip)


Acked-by: Chanwoo Choi <[e-mail]>

Patch

diff --git a/drivers/clk/samsung/clk-exynosautov9.c b/drivers/clk/samsung/clk-exynosautov9.c
index b3ea586c0d21..aaa78b921fde 100644
--- a/drivers/clk/samsung/clk-exynosautov9.c
+++ b/drivers/clk/samsung/clk-exynosautov9.c
@@ -957,6 +957,58 @@  static void __init exynosautov9_cmu_top_init(struct device_node *np)
 CLK_OF_DECLARE(exynosautov9_cmu_top, "samsung,exynosautov9-cmu-top",
 	       exynosautov9_cmu_top_init);
 
+/* ---- CMU_BUSMC ---------------------------------------------------------- */
+
+/* Register Offset definitions for CMU_BUSMC (0x1b200000) */
+#define PLL_CON0_MUX_CLKCMU_BUSMC_BUS_USER				0x0600
+#define CLK_CON_DIV_DIV_CLK_BUSMC_BUSP					0x1800
+#define CLK_CON_GAT_GOUT_BLK_BUSMC_UID_QE_PDMA0_IPCLKPORT_PCLK		0x2078
+#define CLK_CON_GAT_GOUT_BLK_BUSMC_UID_QE_SPDMA_IPCLKPORT_PCLK		0x2080
+
+static const unsigned long busmc_clk_regs[] __initconst = {
+	PLL_CON0_MUX_CLKCMU_BUSMC_BUS_USER,
+	CLK_CON_DIV_DIV_CLK_BUSMC_BUSP,
+	CLK_CON_GAT_GOUT_BLK_BUSMC_UID_QE_PDMA0_IPCLKPORT_PCLK,
+	CLK_CON_GAT_GOUT_BLK_BUSMC_UID_QE_SPDMA_IPCLKPORT_PCLK,
+};
+
+/* List of parent clocks for Muxes in CMU_BUSMC */
+PNAME(mout_busmc_bus_user_p) = { "oscclk", "dout_clkcmu_busmc_bus" };
+
+static const struct samsung_mux_clock busmc_mux_clks[] __initconst = {
+	MUX(CLK_MOUT_BUSMC_BUS_USER, "mout_busmc_bus_user",
+	    mout_busmc_bus_user_p, PLL_CON0_MUX_CLKCMU_BUSMC_BUS_USER, 4, 1),
+};
+
+static const struct samsung_div_clock busmc_div_clks[] __initconst = {
+	DIV(CLK_DOUT_BUSMC_BUSP, "dout_busmc_busp", "mout_busmc_bus_user",
+	    CLK_CON_DIV_DIV_CLK_BUSMC_BUSP, 0, 3),
+};
+
+static const struct samsung_gate_clock busmc_gate_clks[] __initconst = {
+	GATE(CLK_GOUT_BUSMC_PDMA0_PCLK, "gout_busmc_pdma0_pclk",
+	     "dout_busmc_busp",
+	     CLK_CON_GAT_GOUT_BLK_BUSMC_UID_QE_PDMA0_IPCLKPORT_PCLK, 21,
+	     0, 0),
+	GATE(CLK_GOUT_BUSMC_SPDMA_PCLK, "gout_busmc_spdma_pclk",
+	     "dout_busmc_busp",
+	     CLK_CON_GAT_GOUT_BLK_BUSMC_UID_QE_SPDMA_IPCLKPORT_PCLK, 21,
+	     0, 0),
+};
+
+static const struct samsung_cmu_info busmc_cmu_info __initconst = {
+	.mux_clks		= busmc_mux_clks,
+	.nr_mux_clks		= ARRAY_SIZE(busmc_mux_clks),
+	.div_clks		= busmc_div_clks,
+	.nr_div_clks		= ARRAY_SIZE(busmc_div_clks),
+	.gate_clks		= busmc_gate_clks,
+	.nr_gate_clks		= ARRAY_SIZE(busmc_gate_clks),
+	.nr_clk_ids		= BUSMC_NR_CLK,
+	.clk_regs		= busmc_clk_regs,
+	.nr_clk_regs		= ARRAY_SIZE(busmc_clk_regs),
+	.clk_name		= "dout_clkcmu_busmc_bus",
+};
+
 /* ---- CMU_CORE ----------------------------------------------------------- */
 
 /* Register Offset definitions for CMU_CORE (0x1b030000) */
@@ -1075,6 +1127,9 @@  static int __init exynosautov9_cmu_probe(struct platform_device *pdev)
 
 static const struct of_device_id exynosautov9_cmu_of_match[] = {
 	{
+		.compatible = "samsung,exynosautov9-cmu-busmc",
+		.data = &busmc_cmu_info,
+	}, {
 		.compatible = "samsung,exynosautov9-cmu-core",
 		.data = &core_cmu_info,
 	}, {