Fixes for various clk driver issues that happened because of code we

merged this merge window. The Amlogic driver was missing some flags
 causing rates to be rounded improperly or clk_set_rate() to fail. The
 Samsung driver wasn't freeing everything on error paths and improperly
 saving/restoring PLL state across suspend/resume. The at91 driver was
 calling msleep() too early when scheduling hadn't started, so we put in
 place a quick solution until we can handle this sort of problem in the
 core framework. There were also problems with the Allwinner driver and
 operator precedence being incorrect causing subtle bugs. Finally, the TI
 driver was duplicating aliases and not delaying long enough leading to
 some unexpected timeouts.
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Merge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux

Pull clk fixes from Stephen Boyd:
 "Fixes for various clk driver issues that happened because of code we
  merged this merge window.

  The Amlogic driver was missing some flags causing rates to be rounded
  improperly or clk_set_rate() to fail. The Samsung driver wasn't
  freeing everything on error paths and improperly saving/restoring PLL
  state across suspend/resume. The at91 driver was calling msleep() too
  early when scheduling hadn't started, so we put in place a quick
  solution until we can handle this sort of problem in the core
  framework.

  There were also problems with the Allwinner driver and operator
  precedence being incorrect causing subtle bugs. Finally, the TI driver
  was duplicating aliases and not delaying long enough leading to some
  unexpected timeouts"

* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
  clk: ti: clkctrl: Fix failed to enable error with double udelay timeout
  clk: ti: dra7-atl-clock: Remove ti_clk_add_alias call
  clk: sunxi-ng: a80: fix the zero'ing of bits 16 and 18
  clk: sunxi: Fix operator precedence in sunxi_divs_clk_setup
  clk: ast2600: Fix enabling of clocks
  clk: at91: avoid sleeping early
  clk: imx8m: Use SYS_PLL1_800M as intermediate parent of CLK_ARM
  clk: samsung: exynos5420: Preserve PLL configuration during suspend/resume
  clk: samsung: exynos542x: Move G3D subsystem clocks to its sub-CMU
  clk: samsung: exynos5433: Fix error paths
  clk: at91: sam9x60: fix programmable clock
  clk: meson: g12a: set CLK_MUX_ROUND_CLOSEST on the cpu clock muxes
  clk: meson: g12a: fix cpu clock rate setting
  clk: meson: gxbb: let sar_adc_clk_div set the parent clock rate

drivers/clk/at91/clk-main.c

@@ -297,7 +297,10 @@ static int clk_main_probe_frequency(struct regmap *regmap)
 		regmap_read(regmap, AT91_CKGR_MCFR, &mcfr);
 		if (mcfr & AT91_PMC_MAINRDY)
 			return 0;
-		usleep_range(MAINF_LOOP_MIN_WAIT, MAINF_LOOP_MAX_WAIT);
+		if (system_state < SYSTEM_RUNNING)
+			udelay(MAINF_LOOP_MIN_WAIT);
+		else
+			usleep_range(MAINF_LOOP_MIN_WAIT, MAINF_LOOP_MAX_WAIT);
 	} while (time_before(prep_time, timeout));
 
 	return -ETIMEDOUT;

drivers/clk/at91/sam9x60.c

@@ -43,6 +43,7 @@ static const struct clk_pll_characteristics upll_characteristics = {
 };
 
 static const struct clk_programmable_layout sam9x60_programmable_layout = {
+	.pres_mask = 0xff,
 	.pres_shift = 8,
 	.css_mask = 0x1f,
 	.have_slck_mck = 0,

drivers/clk/at91/sckc.c

@@ -76,7 +76,10 @@ static int clk_slow_osc_prepare(struct clk_hw *hw)
 
 	writel(tmp | osc->bits->cr_osc32en, sckcr);
 
-	usleep_range(osc->startup_usec, osc->startup_usec + 1);
+	if (system_state < SYSTEM_RUNNING)
+		udelay(osc->startup_usec);
+	else
+		usleep_range(osc->startup_usec, osc->startup_usec + 1);
 
 	return 0;
 }
@@ -187,7 +190,10 @@ static int clk_slow_rc_osc_prepare(struct clk_hw *hw)
 
 	writel(readl(sckcr) | osc->bits->cr_rcen, sckcr);
 
-	usleep_range(osc->startup_usec, osc->startup_usec + 1);
+	if (system_state < SYSTEM_RUNNING)
+		udelay(osc->startup_usec);
+	else
+		usleep_range(osc->startup_usec, osc->startup_usec + 1);
 
 	return 0;
 }
@@ -288,7 +294,10 @@ static int clk_sam9x5_slow_set_parent(struct clk_hw *hw, u8 index)
 
 	writel(tmp, sckcr);
 
-	usleep_range(SLOWCK_SW_TIME_USEC, SLOWCK_SW_TIME_USEC + 1);
+	if (system_state < SYSTEM_RUNNING)
+		udelay(SLOWCK_SW_TIME_USEC);
+	else
+		usleep_range(SLOWCK_SW_TIME_USEC, SLOWCK_SW_TIME_USEC + 1);
 
 	return 0;
 }
@@ -533,7 +542,10 @@ static int clk_sama5d4_slow_osc_prepare(struct clk_hw *hw)
 		return 0;
 	}
 
-	usleep_range(osc->startup_usec, osc->startup_usec + 1);
+	if (system_state < SYSTEM_RUNNING)
+		udelay(osc->startup_usec);
+	else
+		usleep_range(osc->startup_usec, osc->startup_usec + 1);
 	osc->prepared = true;
 
 	return 0;

drivers/clk/clk-ast2600.c

@@ -266,10 +266,11 @@ static int aspeed_g6_clk_enable(struct clk_hw *hw)
 
 	/* Enable clock */
 	if (gate->flags & CLK_GATE_SET_TO_DISABLE) {
-		regmap_write(gate->map, get_clock_reg(gate), clk);
-	} else {
-		/* Use set to clear register */
+		/* Clock is clear to enable, so use set to clear register */
 		regmap_write(gate->map, get_clock_reg(gate) + 0x04, clk);
+	} else {
+		/* Clock is set to enable, so use write to set register */
+		regmap_write(gate->map, get_clock_reg(gate), clk);
 	}
 
 	if (gate->reset_idx >= 0) {

drivers/clk/imx/clk-imx8mm.c

@@ -638,7 +638,7 @@ static int imx8mm_clocks_probe(struct platform_device *pdev)
 					   clks[IMX8MM_CLK_A53_DIV],
 					   clks[IMX8MM_CLK_A53_SRC],
 					   clks[IMX8MM_ARM_PLL_OUT],
-					   clks[IMX8MM_CLK_24M]);
+					   clks[IMX8MM_SYS_PLL1_800M]);
 
 	imx_check_clocks(clks, ARRAY_SIZE(clks));
 

drivers/clk/imx/clk-imx8mn.c

@@ -610,7 +610,7 @@ static int imx8mn_clocks_probe(struct platform_device *pdev)
 					   clks[IMX8MN_CLK_A53_DIV],
 					   clks[IMX8MN_CLK_A53_SRC],
 					   clks[IMX8MN_ARM_PLL_OUT],
-					   clks[IMX8MN_CLK_24M]);
+					   clks[IMX8MN_SYS_PLL1_800M]);
 
 	imx_check_clocks(clks, ARRAY_SIZE(clks));
 

drivers/clk/meson/g12a.c

@@ -343,6 +343,7 @@ static struct clk_regmap g12a_cpu_clk_premux0 = {
 		.offset = HHI_SYS_CPU_CLK_CNTL0,
 		.mask = 0x3,
 		.shift = 0,
+		.flags = CLK_MUX_ROUND_CLOSEST,
 	},
 	.hw.init = &(struct clk_init_data){
 		.name = "cpu_clk_dyn0_sel",
@@ -353,8 +354,7 @@ static struct clk_regmap g12a_cpu_clk_premux0 = {
 			{ .hw = &g12a_fclk_div3.hw },
 		},
 		.num_parents = 3,
-		/* This sub-tree is used a parking clock */
-		.flags = CLK_SET_RATE_NO_REPARENT,
+		.flags = CLK_SET_RATE_PARENT,
 	},
 };
 
@@ -410,6 +410,7 @@ static struct clk_regmap g12a_cpu_clk_postmux0 = {
 		.offset = HHI_SYS_CPU_CLK_CNTL0,
 		.mask = 0x1,
 		.shift = 2,
+		.flags = CLK_MUX_ROUND_CLOSEST,
 	},
 	.hw.init = &(struct clk_init_data){
 		.name = "cpu_clk_dyn0",
@@ -466,6 +467,7 @@ static struct clk_regmap g12a_cpu_clk_dyn = {
 		.offset = HHI_SYS_CPU_CLK_CNTL0,
 		.mask = 0x1,
 		.shift = 10,
+		.flags = CLK_MUX_ROUND_CLOSEST,
 	},
 	.hw.init = &(struct clk_init_data){
 		.name = "cpu_clk_dyn",
@@ -485,6 +487,7 @@ static struct clk_regmap g12a_cpu_clk = {
 		.offset = HHI_SYS_CPU_CLK_CNTL0,
 		.mask = 0x1,
 		.shift = 11,
+		.flags = CLK_MUX_ROUND_CLOSEST,
 	},
 	.hw.init = &(struct clk_init_data){
 		.name = "cpu_clk",
@@ -504,6 +507,7 @@ static struct clk_regmap g12b_cpu_clk = {
 		.offset = HHI_SYS_CPU_CLK_CNTL0,
 		.mask = 0x1,
 		.shift = 11,
+		.flags = CLK_MUX_ROUND_CLOSEST,
 	},
 	.hw.init = &(struct clk_init_data){
 		.name = "cpu_clk",
@@ -523,6 +527,7 @@ static struct clk_regmap g12b_cpub_clk_premux0 = {
 		.offset = HHI_SYS_CPUB_CLK_CNTL,
 		.mask = 0x3,
 		.shift = 0,
+		.flags = CLK_MUX_ROUND_CLOSEST,
 	},
 	.hw.init = &(struct clk_init_data){
 		.name = "cpub_clk_dyn0_sel",
@@ -533,6 +538,7 @@ static struct clk_regmap g12b_cpub_clk_premux0 = {
 			{ .hw = &g12a_fclk_div3.hw },
 		},
 		.num_parents = 3,
+		.flags = CLK_SET_RATE_PARENT,
 	},
 };
 
@@ -567,6 +573,7 @@ static struct clk_regmap g12b_cpub_clk_postmux0 = {
 		.offset = HHI_SYS_CPUB_CLK_CNTL,
 		.mask = 0x1,
 		.shift = 2,
+		.flags = CLK_MUX_ROUND_CLOSEST,
 	},
 	.hw.init = &(struct clk_init_data){
 		.name = "cpub_clk_dyn0",
@@ -644,6 +651,7 @@ static struct clk_regmap g12b_cpub_clk_dyn = {
 		.offset = HHI_SYS_CPUB_CLK_CNTL,
 		.mask = 0x1,
 		.shift = 10,
+		.flags = CLK_MUX_ROUND_CLOSEST,
 	},
 	.hw.init = &(struct clk_init_data){
 		.name = "cpub_clk_dyn",
@@ -663,6 +671,7 @@ static struct clk_regmap g12b_cpub_clk = {
 		.offset = HHI_SYS_CPUB_CLK_CNTL,
 		.mask = 0x1,
 		.shift = 11,
+		.flags = CLK_MUX_ROUND_CLOSEST,
 	},
 	.hw.init = &(struct clk_init_data){
 		.name = "cpub_clk",

drivers/clk/meson/gxbb.c

@@ -935,6 +935,7 @@ static struct clk_regmap gxbb_sar_adc_clk_div = {
 			&gxbb_sar_adc_clk_sel.hw
 		},
 		.num_parents = 1,
+		.flags = CLK_SET_RATE_PARENT,
 	},
 };
 

drivers/clk/samsung/clk-exynos5420.c

@@ -165,12 +165,18 @@ static const unsigned long exynos5x_clk_regs[] __initconst = {
 	GATE_BUS_CPU,
 	GATE_SCLK_CPU,
 	CLKOUT_CMU_CPU,
+	CPLL_CON0,
+	DPLL_CON0,
 	EPLL_CON0,
 	EPLL_CON1,
 	EPLL_CON2,
 	RPLL_CON0,
 	RPLL_CON1,
 	RPLL_CON2,
+	IPLL_CON0,
+	SPLL_CON0,
+	VPLL_CON0,
+	MPLL_CON0,
 	SRC_TOP0,
 	SRC_TOP1,
 	SRC_TOP2,
@@ -1172,8 +1178,6 @@ static const struct samsung_gate_clock exynos5x_gate_clks[] __initconst = {
 	GATE(CLK_SCLK_ISP_SENSOR2, "sclk_isp_sensor2", "dout_isp_sensor2",
 			GATE_TOP_SCLK_ISP, 12, CLK_SET_RATE_PARENT, 0),
 
-	GATE(CLK_G3D, "g3d", "mout_user_aclk_g3d", GATE_IP_G3D, 9, 0, 0),
-
 	/* CDREX */
 	GATE(CLK_CLKM_PHY0, "clkm_phy0", "dout_sclk_cdrex",
 			GATE_BUS_CDREX0, 0, 0, 0),
@@ -1248,6 +1252,15 @@ static struct exynos5_subcmu_reg_dump exynos5x_gsc_suspend_regs[] = {
 	{ DIV2_RATIO0, 0, 0x30 },	/* DIV dout_gscl_blk_300 */
 };
 
+static const struct samsung_gate_clock exynos5x_g3d_gate_clks[] __initconst = {
+	GATE(CLK_G3D, "g3d", "mout_user_aclk_g3d", GATE_IP_G3D, 9, 0, 0),
+};
+
+static struct exynos5_subcmu_reg_dump exynos5x_g3d_suspend_regs[] = {
+	{ GATE_IP_G3D, 0x3ff, 0x3ff },	/* G3D gates */
+	{ SRC_TOP5, 0, BIT(16) },	/* MUX mout_user_aclk_g3d */
+};
+
 static const struct samsung_div_clock exynos5x_mfc_div_clks[] __initconst = {
 	DIV(0, "dout_mfc_blk", "mout_user_aclk333", DIV4_RATIO, 0, 2),
 };
@@ -1320,6 +1333,14 @@ static const struct exynos5_subcmu_info exynos5x_gsc_subcmu = {
 	.pd_name	= "GSC",
 };
 
+static const struct exynos5_subcmu_info exynos5x_g3d_subcmu = {
+	.gate_clks	= exynos5x_g3d_gate_clks,
+	.nr_gate_clks	= ARRAY_SIZE(exynos5x_g3d_gate_clks),
+	.suspend_regs	= exynos5x_g3d_suspend_regs,
+	.nr_suspend_regs = ARRAY_SIZE(exynos5x_g3d_suspend_regs),
+	.pd_name	= "G3D",
+};
+
 static const struct exynos5_subcmu_info exynos5x_mfc_subcmu = {
 	.div_clks	= exynos5x_mfc_div_clks,
 	.nr_div_clks	= ARRAY_SIZE(exynos5x_mfc_div_clks),
@@ -1351,6 +1372,7 @@ static const struct exynos5_subcmu_info exynos5800_mau_subcmu = {
 static const struct exynos5_subcmu_info *exynos5x_subcmus[] = {
 	&exynos5x_disp_subcmu,
 	&exynos5x_gsc_subcmu,
+	&exynos5x_g3d_subcmu,
 	&exynos5x_mfc_subcmu,
 	&exynos5x_mscl_subcmu,
 };
@@ -1358,6 +1380,7 @@ static const struct exynos5_subcmu_info *exynos5x_subcmus[] = {
 static const struct exynos5_subcmu_info *exynos5800_subcmus[] = {
 	&exynos5x_disp_subcmu,
 	&exynos5x_gsc_subcmu,
+	&exynos5x_g3d_subcmu,
 	&exynos5x_mfc_subcmu,
 	&exynos5x_mscl_subcmu,
 	&exynos5800_mau_subcmu,

drivers/clk/samsung/clk-exynos5433.c

@@ -13,6 +13,7 @@
 #include <linux/of_device.h>
 #include <linux/platform_device.h>
 #include <linux/pm_runtime.h>
+#include <linux/slab.h>
 
 #include <dt-bindings/clock/exynos5433.h>
 
@@ -5584,6 +5585,8 @@ static int __init exynos5433_cmu_probe(struct platform_device *pdev)
 
 	data->clk_save = samsung_clk_alloc_reg_dump(info->clk_regs,
 						    info->nr_clk_regs);
+	if (!data->clk_save)
+		return -ENOMEM;
 	data->nr_clk_save = info->nr_clk_regs;
 	data->clk_suspend = info->suspend_regs;
 	data->nr_clk_suspend = info->nr_suspend_regs;
@@ -5592,12 +5595,19 @@ static int __init exynos5433_cmu_probe(struct platform_device *pdev)
 	if (data->nr_pclks > 0) {
 		data->pclks = devm_kcalloc(dev, sizeof(struct clk *),
 					   data->nr_pclks, GFP_KERNEL);
-
+		if (!data->pclks) {
+			kfree(data->clk_save);
+			return -ENOMEM;
+		}
 		for (i = 0; i < data->nr_pclks; i++) {
 			struct clk *clk = of_clk_get(dev->of_node, i);
 
-			if (IS_ERR(clk))
+			if (IS_ERR(clk)) {
+				kfree(data->clk_save);
+				while (--i >= 0)
+					clk_put(data->pclks[i]);
 				return PTR_ERR(clk);
+			}
 			data->pclks[i] = clk;
 		}
 	}

drivers/clk/sunxi-ng/ccu-sun9i-a80.c

@@ -1224,7 +1224,7 @@ static int sun9i_a80_ccu_probe(struct platform_device *pdev)
 
 	/* Enforce d1 = 0, d2 = 0 for Audio PLL */
 	val = readl(reg + SUN9I_A80_PLL_AUDIO_REG);
-	val &= (BIT(16) & BIT(18));
+	val &= ~(BIT(16) | BIT(18));
 	writel(val, reg + SUN9I_A80_PLL_AUDIO_REG);
 
 	/* Enforce P = 1 for both CPU cluster PLLs */

drivers/clk/sunxi/clk-sunxi.c

@@ -1080,8 +1080,8 @@ static struct clk ** __init sunxi_divs_clk_setup(struct device_node *node,
 						 rate_hw, rate_ops,
 						 gate_hw, &clk_gate_ops,
 						 clkflags |
-						 data->div[i].critical ?
-							CLK_IS_CRITICAL : 0);
+						 (data->div[i].critical ?
+							CLK_IS_CRITICAL : 0));
 
 		WARN_ON(IS_ERR(clk_data->clks[i]));
 	}

drivers/clk/ti/clk-dra7-atl.c

@@ -174,7 +174,6 @@ static void __init of_dra7_atl_clock_setup(struct device_node *node)
 	struct clk_init_data init = { NULL };
 	const char **parent_names = NULL;
 	struct clk *clk;
-	int ret;
 
 	clk_hw = kzalloc(sizeof(*clk_hw), GFP_KERNEL);
 	if (!clk_hw) {
@@ -207,11 +206,6 @@ static void __init of_dra7_atl_clock_setup(struct device_node *node)
 	clk = ti_clk_register(NULL, &clk_hw->hw, node->name);
 
 	if (!IS_ERR(clk)) {
-		ret = ti_clk_add_alias(NULL, clk, node->name);
-		if (ret) {
-			clk_unregister(clk);
-			goto cleanup;
-		}
 		of_clk_add_provider(node, of_clk_src_simple_get, clk);
 		kfree(parent_names);
 		return;

drivers/clk/ti/clkctrl.c

@@ -100,11 +100,12 @@ static bool _omap4_is_timeout(union omap4_timeout *time, u32 timeout)
 	 * can be from a timer that requires pm_runtime access, which
 	 * will eventually bring us here with timekeeping_suspended,
 	 * during both suspend entry and resume paths. This happens
-	 * at least on am43xx platform.
+	 * at least on am43xx platform. Account for flakeyness
+	 * with udelay() by multiplying the timeout value by 2.
 	 */
 	if (unlikely(_early_timeout || timekeeping_suspended)) {
 		if (time->cycles++ < timeout) {
-			udelay(1);
+			udelay(1 * 2);
 			return false;
 		}
 	} else {