[07/25] clk: imx8mm: Prevent clock critical path from disabling during reparent and set_rate
diff mbox series

Message ID 20240714071023.10417-7-michael@amarulasolutions.com
State New
Headers show
Series
  • [01/25] clk: Propagate clk_set_rate() if CLK_SET_PARENT_RATE present for gate and mux
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Commit Message

Michael Nazzareno Trimarchi July 14, 2024, 7:10 a.m. UTC 
This commit ensures that critical clock paths are not disabled during reparent
and set_rate operations within the clock framework, paving the way for the
inclusion of new features.

Signed-off-by: Michael Trimarchi <michael@amarulasolutions.com>
---
 drivers/clk/imx/clk-imx8mm.c | 58 ++++++++++++++++++++++++++++--------
 1 file changed, 45 insertions(+), 13 deletions(-)

Patch
diff mbox series 

diff --git a/drivers/clk/imx/clk-imx8mm.c b/drivers/clk/imx/clk-imx8mm.c
index e538f047b3..685e7df0e5 100644
--- a/drivers/clk/imx/clk-imx8mm.c
+++ b/drivers/clk/imx/clk-imx8mm.c
@@ -25,11 +25,23 @@  static const char * const imx8mm_a53_sels[] = {"clock-osc-24m", "arm_pll_out", "
 					       "sys_pll2_1000m", "sys_pll1_800m", "sys_pll1_400m",
 					       "audio_pll1_out", "sys_pll3_out", };
 
+#ifndef CONFIG_SPL_BUILD
+static const char * const imx8mm_noc_sels[] = {"clock-osc-24m", "sys_pll1_800m", "sys_pll3_out",
+					       "sys_pll2_1000m", "sys_pll2_500m", "audio_pll1_out",
+					       "video_pll1_out", "audio_pll2_out", };
+
+static const char * const imx8mm_noc_apb_sels[] = {"clock-osc-24m", "sys_pll1_400m", "sys_pll3_out",
+						   "sys_pll2_333m", "sys_pll2_200m", "sys_pll1_800m",
+						   "audio_pll1_out", "video_pll1_out", };
+
 static const char * const imx8mm_ahb_sels[] = {"clock-osc-24m", "sys_pll1_133m", "sys_pll1_800m",
 					       "sys_pll1_400m", "sys_pll2_125m", "sys_pll3_out",
 					       "audio_pll1_out", "video_pll1_out", };
 
-#ifndef CONFIG_SPL_BUILD
+static const char * const imx8mm_main_axi_sels[] = {"clock-osc-24m", "sys_pll2_333m", "sys_pll1_800m",
+						    "sys_pll2_250m", "sys_pll2_1000m", "audio_pll1_out",
+						    "video_pll1_out", "sys_pll1_100m",};
+
 static const char * const imx8mm_enet_axi_sels[] = {"clock-osc-24m", "sys_pll1_266m", "sys_pll1_800m",
 						    "sys_pll2_250m", "sys_pll2_200m", "audio_pll1_out",
 						    "video_pll1_out", "sys_pll3_out", };
@@ -45,6 +57,10 @@  static const char * const imx8mm_enet_timer_sels[] = {"clock-osc-24m", "sys_pll2
 static const char * const imx8mm_enet_phy_sels[] = {"clock-osc-24m", "sys_pll2_50m", "sys_pll2_125m",
 						    "sys_pll2_200m", "sys_pll2_500m", "video_pll1_out",
 						    "audio_pll2_out", };
+
+static const char * const imx8mm_dram_apb_sels[] = {"clock-osc-24m", "sys_pll2_200m", "sys_pll1_40m",
+						    "sys_pll1_160m", "sys_pll1_800m", "sys_pll3_out",
+						    "sys_pll2_250m", "audio_pll2_out", };
 #endif
 
 static const char * const imx8mm_nand_usdhc_sels[] = {"clock-osc-24m", "sys_pll1_266m", "sys_pll1_800m",
@@ -133,6 +149,10 @@  static const char * const imx8mm_usb_phy_sels[] = {"clock-osc-24m", "sys_pll1_10
 						   "sys_pll2_100m", "sys_pll2_200m", "clk_ext2",
 						   "clk_ext3", "audio_pll2_out", };
 
+static const char * const imx8mm_gic_sels[] = {"clock-osc-24m", "sys_pll2_200m", "sys_pll1_40m",
+					       "sys_pll2_100m", "sys_pll1_800m", "clk_ext2",
+					       "clk_ext4", "audio_pll2_out" };
+
 #if CONFIG_IS_ENABLED(DM_SPI)
 static const char * const imx8mm_ecspi1_sels[] = {"clock-osc-24m", "sys_pll2_200m", "sys_pll1_40m",
 						  "sys_pll1_160m", "sys_pll1_800m", "sys_pll3_out",
@@ -281,18 +301,30 @@  static int imx8mm_clk_probe(struct udevice *dev)
 	       imx_clk_divider2("arm_a53_div", "arm_a53_cg",
 				base + 0x8000, 0, 3));
 
-	clk_dm(IMX8MM_CLK_AHB,
-	       imx8m_clk_composite_critical("ahb", imx8mm_ahb_sels,
-					    base + 0x9000));
 	clk_dm(IMX8MM_CLK_IPG_ROOT,
 	       imx_clk_divider2("ipg_root", "ahb", base + 0x9080, 0, 1));
 
-	clk_dm(IMX8MM_CLK_NAND_USDHC_BUS,
-	       imx8m_clk_composite_critical("nand_usdhc_bus",
-					    imx8mm_nand_usdhc_sels,
-					    base + 0x8900));
-	clk_dm(IMX8MM_CLK_USB_BUS,
-		imx8m_clk_composite("usb_bus", imx8mm_usb_bus_sels, base + 0x8b80));
+#ifndef CONFIG_SPL_BUILD
+	/* BUS */
+	clk_dm(IMX8MM_CLK_MAIN_AXI, imx8m_clk_composite_critical("main_axi",
+	       imx8mm_main_axi_sels, base + 0x8800));
+	clk_dm(IMX8MM_CLK_ENET_AXI, imx8m_clk_composite("enet_axi",
+	       imx8mm_enet_axi_sels, base + 0x8880));
+	clk_dm(IMX8MM_CLK_NOC, imx8m_clk_composite_critical("noc",
+	       imx8mm_noc_sels, base + 0x8d00));
+	clk_dm(IMX8MM_CLK_NOC_APB, imx8m_clk_composite_critical("noc_apb",
+	       imx8mm_noc_apb_sels, base + 0x8d80));
+	clk_dm(IMX8MM_CLK_AHB, imx8m_clk_composite_critical("ahb",
+	       imx8mm_ahb_sels, base + 0x9000));
+	clk_dm(IMX8MM_CLK_DRAM_APB, imx8m_clk_composite_critical("dram_apb",
+	       imx8mm_dram_apb_sels, base + 0xa080));
+#endif
+
+	clk_dm(IMX8MM_CLK_NAND_USDHC_BUS, imx8m_clk_composite_critical("nand_usdhc_bus",
+	       imx8mm_nand_usdhc_sels, base + 0x8900));
+
+	clk_dm(IMX8MM_CLK_USB_BUS, imx8m_clk_composite("usb_bus",
+	       imx8mm_usb_bus_sels, base + 0x8b80));
 
 	/* IP */
 #if CONFIG_IS_ENABLED(PCIE_DW_IMX)
@@ -356,9 +388,6 @@  static int imx8mm_clk_probe(struct udevice *dev)
 
 	/* clks not needed in SPL stage */
 #ifndef CONFIG_SPL_BUILD
-	clk_dm(IMX8MM_CLK_ENET_AXI,
-	       imx8m_clk_composite("enet_axi", imx8mm_enet_axi_sels,
-				   base + 0x8880));
 	clk_dm(IMX8MM_CLK_ENET_REF,
 	       imx8m_clk_composite("enet_ref", imx8mm_enet_ref_sels,
 	       base + 0xa980));
@@ -394,6 +423,9 @@  static int imx8mm_clk_probe(struct udevice *dev)
 	       imx_clk_gate4("pcie1_root_clk", "pcie1_ctrl", base + 0x4250, 0));
 #endif
 
+	clk_dm(IMX8MM_CLK_GIC, imx8m_clk_composite_critical("gic",
+	       imx8mm_gic_sels, base + 0xb200));
+
 #if CONFIG_IS_ENABLED(DM_SPI)
 	clk_dm(IMX8MM_CLK_ECSPI1,
 	       imx8m_clk_composite("ecspi1", imx8mm_ecspi1_sels, base + 0xb280));