[PATCH 2/2] clk: imx8mn: remove SYS PLL 1/2 clock gates

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This commit is based on commit dd977acd6 ("clk: imx8mp: remove SYS PLL
1/2 clock gates") and adopts kernel commit:

| commit 38ce00adc16319544c8c56edd36324d2c1b98a50
| Author:     Peng Fan <peng.fan@xxxxxxx>
| AuthorDate: Fri Feb 25 16:17:32 2022 +0800
| Commit:     Abel Vesa <abel.vesa@xxxxxxx>
| CommitDate: Fri Mar 4 17:06:29 2022 +0200
|
|     clk: imx8mn: remove SYS PLL 1/2 clock gates
|
|     Remove the PLL 1/2 gates as it make AMP clock management harder without
|     obvious benifit.
|
|     Signed-off-by: Peng Fan <peng.fan@xxxxxxx>
|     Reviewed-by: Abel Vesa <abel.vesa@xxxxxxx>
|     Link: https://lore.kernel.org/r/20220225081733.2294166-3-peng.fan@xxxxxxxxxxx
|     Signed-off-by: Abel Vesa <abel.vesa@xxxxxxx>

Unlike the original patch this one also makes sure that the removed
gates are enabled as they are needed for their consumers.

Signed-off-by: Marco Felsch <m.felsch@xxxxxxxxxxxxxx>
---
 drivers/clk/imx/clk-imx8mn.c | 65 ++++++++++++++++++------------------
 1 file changed, 33 insertions(+), 32 deletions(-)

diff --git a/drivers/clk/imx/clk-imx8mn.c b/drivers/clk/imx/clk-imx8mn.c
index a57bfffcb6..02522add39 100644
--- a/drivers/clk/imx/clk-imx8mn.c
+++ b/drivers/clk/imx/clk-imx8mn.c
@@ -281,6 +281,7 @@ static int imx8mn_clocks_init(struct device_node *ccm_np)
 {
 	struct device_node *anatop_np;
 	void __iomem *ccm, *ana;
+	u32 val;
 	int ret;
 
 	anatop_np = of_find_compatible_node(NULL, NULL, "fsl,imx8mn-anatop");
@@ -341,45 +342,45 @@ static int imx8mn_clocks_init(struct device_node *ccm_np)
 	clks[IMX8MN_SYS_PLL3_OUT] = imx_clk_gate("sys_pll3_out", "sys_pll3_bypass", ana + 0x114, 11);
 
 	/* SYS PLL1 fixed output */
-	clks[IMX8MN_SYS_PLL1_40M_CG] = imx_clk_gate("sys_pll1_40m_cg", "sys_pll1", ana + 0x94, 27);
-	clks[IMX8MN_SYS_PLL1_80M_CG] = imx_clk_gate("sys_pll1_80m_cg", "sys_pll1", ana + 0x94, 25);
-	clks[IMX8MN_SYS_PLL1_100M_CG] = imx_clk_gate("sys_pll1_100m_cg", "sys_pll1", ana + 0x94, 23);
-	clks[IMX8MN_SYS_PLL1_133M_CG] = imx_clk_gate("sys_pll1_133m_cg", "sys_pll1", ana + 0x94, 21);
-	clks[IMX8MN_SYS_PLL1_160M_CG] = imx_clk_gate("sys_pll1_160m_cg", "sys_pll1", ana + 0x94, 19);
-	clks[IMX8MN_SYS_PLL1_200M_CG] = imx_clk_gate("sys_pll1_200m_cg", "sys_pll1", ana + 0x94, 17);
-	clks[IMX8MN_SYS_PLL1_266M_CG] = imx_clk_gate("sys_pll1_266m_cg", "sys_pll1", ana + 0x94, 15);
-	clks[IMX8MN_SYS_PLL1_400M_CG] = imx_clk_gate("sys_pll1_400m_cg", "sys_pll1", ana + 0x94, 13);
+	/*
+	 * The gates in CCM_ANALOG_SYS_PLL1_GEN_CTRL are not handled by the
+	 * driver, make sure they are all enabled.
+	 */
+	val = readl(ana + 0x94);
+	val |= BIT(13) | BIT(15) | BIT(17) | BIT(19) | BIT(21) | BIT(23) | BIT(25) | BIT(27);
+	writel(val, ana + 0x94);
+
 	clks[IMX8MN_SYS_PLL1_OUT] = imx_clk_gate("sys_pll1_out", "sys_pll1", ana + 0x94, 11);
 
-	clks[IMX8MN_SYS_PLL1_40M] = imx_clk_fixed_factor("sys_pll1_40m", "sys_pll1_40m_cg", 1, 20);
-	clks[IMX8MN_SYS_PLL1_80M] = imx_clk_fixed_factor("sys_pll1_80m", "sys_pll1_80m_cg", 1, 10);
-	clks[IMX8MN_SYS_PLL1_100M] = imx_clk_fixed_factor("sys_pll1_100m", "sys_pll1_100m_cg", 1, 8);
-	clks[IMX8MN_SYS_PLL1_133M] = imx_clk_fixed_factor("sys_pll1_133m", "sys_pll1_133m_cg", 1, 6);
-	clks[IMX8MN_SYS_PLL1_160M] = imx_clk_fixed_factor("sys_pll1_160m", "sys_pll1_160m_cg", 1, 5);
-	clks[IMX8MN_SYS_PLL1_200M] = imx_clk_fixed_factor("sys_pll1_200m", "sys_pll1_200m_cg", 1, 4);
-	clks[IMX8MN_SYS_PLL1_266M] = imx_clk_fixed_factor("sys_pll1_266m", "sys_pll1_266m_cg", 1, 3);
-	clks[IMX8MN_SYS_PLL1_400M] = imx_clk_fixed_factor("sys_pll1_400m", "sys_pll1_400m_cg", 1, 2);
+	clks[IMX8MN_SYS_PLL1_40M] = imx_clk_fixed_factor("sys_pll1_40m", "sys_pll1_out", 1, 20);
+	clks[IMX8MN_SYS_PLL1_80M] = imx_clk_fixed_factor("sys_pll1_80m", "sys_pll1_out", 1, 10);
+	clks[IMX8MN_SYS_PLL1_100M] = imx_clk_fixed_factor("sys_pll1_100m", "sys_pll1_out", 1, 8);
+	clks[IMX8MN_SYS_PLL1_133M] = imx_clk_fixed_factor("sys_pll1_133m", "sys_pll1_out", 1, 6);
+	clks[IMX8MN_SYS_PLL1_160M] = imx_clk_fixed_factor("sys_pll1_160m", "sys_pll1_out", 1, 5);
+	clks[IMX8MN_SYS_PLL1_200M] = imx_clk_fixed_factor("sys_pll1_200m", "sys_pll1_out", 1, 4);
+	clks[IMX8MN_SYS_PLL1_266M] = imx_clk_fixed_factor("sys_pll1_266m", "sys_pll1_out", 1, 3);
+	clks[IMX8MN_SYS_PLL1_400M] = imx_clk_fixed_factor("sys_pll1_400m", "sys_pll1_out", 1, 2);
 	clks[IMX8MN_SYS_PLL1_800M] = imx_clk_fixed_factor("sys_pll1_800m", "sys_pll1_out", 1, 1);
 
 	/* SYS PLL2 fixed output */
-	clks[IMX8MN_SYS_PLL2_50M_CG] = imx_clk_gate("sys_pll2_50m_cg", "sys_pll2", ana + 0x104, 27);
-	clks[IMX8MN_SYS_PLL2_100M_CG] = imx_clk_gate("sys_pll2_100m_cg", "sys_pll2", ana + 0x104, 25);
-	clks[IMX8MN_SYS_PLL2_125M_CG] = imx_clk_gate("sys_pll2_125m_cg", "sys_pll2", ana + 0x104, 23);
-	clks[IMX8MN_SYS_PLL2_166M_CG] = imx_clk_gate("sys_pll2_166m_cg", "sys_pll2", ana + 0x104, 21);
-	clks[IMX8MN_SYS_PLL2_200M_CG] = imx_clk_gate("sys_pll2_200m_cg", "sys_pll2", ana + 0x104, 19);
-	clks[IMX8MN_SYS_PLL2_250M_CG] = imx_clk_gate("sys_pll2_250m_cg", "sys_pll2", ana + 0x104, 17);
-	clks[IMX8MN_SYS_PLL2_333M_CG] = imx_clk_gate("sys_pll2_333m_cg", "sys_pll2", ana + 0x104, 15);
-	clks[IMX8MN_SYS_PLL2_500M_CG] = imx_clk_gate("sys_pll2_500m_cg", "sys_pll2", ana + 0x104, 13);
+	/*
+	 * The gates in CCM_ANALOG_SYS_PLL2_GEN_CTRL are not handled by the
+	 * driver, make sure they are all enabled.
+	 */
+	val = readl(ana + 0x104);
+	val |= BIT(13) | BIT(15) | BIT(17) | BIT(19) | BIT(21) | BIT(23) | BIT(25) | BIT(27);
+	writel(val, ana + 0x104);
+
 	clks[IMX8MN_SYS_PLL2_OUT] = imx_clk_gate("sys_pll2_out", "sys_pll2", ana + 0x104, 11);
 
-	clks[IMX8MN_SYS_PLL2_50M] = imx_clk_fixed_factor("sys_pll2_50m", "sys_pll2_50m_cg", 1, 20);
-	clks[IMX8MN_SYS_PLL2_100M] = imx_clk_fixed_factor("sys_pll2_100m", "sys_pll2_100m_cg", 1, 10);
-	clks[IMX8MN_SYS_PLL2_125M] = imx_clk_fixed_factor("sys_pll2_125m", "sys_pll2_125m_cg", 1, 8);
-	clks[IMX8MN_SYS_PLL2_166M] = imx_clk_fixed_factor("sys_pll2_166m", "sys_pll2_166m_cg", 1, 6);
-	clks[IMX8MN_SYS_PLL2_200M] = imx_clk_fixed_factor("sys_pll2_200m", "sys_pll2_200m_cg", 1, 5);
-	clks[IMX8MN_SYS_PLL2_250M] = imx_clk_fixed_factor("sys_pll2_250m", "sys_pll2_250m_cg", 1, 4);
-	clks[IMX8MN_SYS_PLL2_333M] = imx_clk_fixed_factor("sys_pll2_333m", "sys_pll2_333m_cg", 1, 3);
-	clks[IMX8MN_SYS_PLL2_500M] = imx_clk_fixed_factor("sys_pll2_500m", "sys_pll2_500m_cg", 1, 2);
+	clks[IMX8MN_SYS_PLL2_50M] = imx_clk_fixed_factor("sys_pll2_50m", "sys_pll2_out", 1, 20);
+	clks[IMX8MN_SYS_PLL2_100M] = imx_clk_fixed_factor("sys_pll2_100m", "sys_pll2_out", 1, 10);
+	clks[IMX8MN_SYS_PLL2_125M] = imx_clk_fixed_factor("sys_pll2_125m", "sys_pll2_out", 1, 8);
+	clks[IMX8MN_SYS_PLL2_166M] = imx_clk_fixed_factor("sys_pll2_166m", "sys_pll2_out", 1, 6);
+	clks[IMX8MN_SYS_PLL2_200M] = imx_clk_fixed_factor("sys_pll2_200m", "sys_pll2_out", 1, 5);
+	clks[IMX8MN_SYS_PLL2_250M] = imx_clk_fixed_factor("sys_pll2_250m", "sys_pll2_out", 1, 4);
+	clks[IMX8MN_SYS_PLL2_333M] = imx_clk_fixed_factor("sys_pll2_333m", "sys_pll2_out", 1, 3);
+	clks[IMX8MN_SYS_PLL2_500M] = imx_clk_fixed_factor("sys_pll2_500m", "sys_pll2_out", 1, 2);
 	clks[IMX8MN_SYS_PLL2_1000M] = imx_clk_fixed_factor("sys_pll2_1000m", "sys_pll2_out", 1, 1);
 
 	clks[IMX8MN_CLK_CLKOUT1_SEL] = imx_clk_mux("clkout1_sel", ana + 0x128, 4, 4, clkout_sels, ARRAY_SIZE(clkout_sels));
-- 
2.30.2





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