Merge branches 'clk-gpio-flags', 'clk-tegra', 'clk-rockchip', 'clk-sprd' and 'clk-pxa' into clk-next

 - Make gpio gate clks propagate rate setting up to parent

* clk-gpio-flags:
  clk: clk-gpio: propagate rate change to parent

* clk-tegra: (23 commits)
  clk: tegra: Use match_string() helper to simplify the code
  clk: tegra: Fix build error without CONFIG_PM_SLEEP
  clk: tegra: Add missing stubs for the case of !CONFIG_PM_SLEEP
  clk: tegra: Optimize PLLX restore on Tegra20/30
  clk: tegra: Add suspend and resume support on Tegra210
  clk: tegra: Share clk and rst register defines with Tegra clock driver
  clk: tegra: Use fence_udelay() during PLLU init
  clk: tegra: clk-dfll: Add suspend and resume support
  clk: tegra: clk-super: Add restore-context support
  clk: tegra: clk-super: Fix to enable PLLP branches to CPU
  clk: tegra: periph: Add restore_context support
  clk: tegra: Support for OSC context save and restore
  clk: tegra: pll: Save and restore pll context
  clk: tegra: pllout: Save and restore pllout context
  clk: tegra: divider: Save and restore divider rate
  clk: tegra: Reimplement SOR clocks on Tegra210
  clk: tegra: Reimplement SOR clock on Tegra124
  clk: tegra: Rename sor0_lvds to sor0_out
  clk: tegra: Move SOR0 implementation to Tegra124
  clk: tegra: Remove last remains of TEGRA210_CLK_SOR1_SRC
  ...

* clk-rockchip:
  clk: rockchip: protect the pclk_usb_grf as critical on px30
  clk: rockchip: add video-related niu clocks as critical on px30
  clk: rockchip: move px30 critical clocks to correct clock controller
  clk: rockchip: Add div50 clocks for px30 sdmmc, emmc, sdio and nandc
  clk: rockchip: Add div50 clock-ids for sdmmc on px30 and nandc
  clk: rockchip: make clk_half_divider_ops static

* clk-sprd:
  clk: sprd: Use IS_ERR() to validate the return value of syscon_regmap_lookup_by_phandle()

* clk-pxa:
  clk: pxa: fix one of the pxa RTC clocks

Author: bebarino

drivers/clk/clk-gpio.c

@@ -280,7 +280,7 @@ static int gpio_clk_driver_probe(struct platform_device *pdev)
 	else
 		clk = clk_register_gpio_gate(&pdev->dev, node->name,
 				parent_names ?  parent_names[0] : NULL, gpiod,
-				0);
+				CLK_SET_RATE_PARENT);
 	if (IS_ERR(clk))
 		return PTR_ERR(clk);
 

drivers/clk/clk.c

@@ -1674,6 +1674,24 @@ static int clk_fetch_parent_index(struct clk_core *core,
 	return i;
 }
 
+/**
+ * clk_hw_get_parent_index - return the index of the parent clock
+ * @hw: clk_hw associated with the clk being consumed
+ *
+ * Fetches and returns the index of parent clock. Returns -EINVAL if the given
+ * clock does not have a current parent.
+ */
+int clk_hw_get_parent_index(struct clk_hw *hw)
+{
+	struct clk_hw *parent = clk_hw_get_parent(hw);
+
+	if (WARN_ON(parent == NULL))
+		return -EINVAL;
+
+	return clk_fetch_parent_index(hw->core, parent->core);
+}
+EXPORT_SYMBOL_GPL(clk_hw_get_parent_index);
+
 /*
  * Update the orphan status of @core and all its children.
  */

drivers/clk/pxa/clk-pxa27x.c

@@ -459,6 +459,7 @@ struct dummy_clk {
 };
 static struct dummy_clk dummy_clks[] __initdata = {
 	DUMMY_CLK(NULL, "pxa27x-gpio", "osc_32_768khz"),
+	DUMMY_CLK(NULL, "pxa-rtc", "osc_32_768khz"),
 	DUMMY_CLK(NULL, "sa1100-rtc", "osc_32_768khz"),
 	DUMMY_CLK("UARTCLK", "pxa2xx-ir", "STUART"),
 };

drivers/clk/rockchip/clk-half-divider.c

@@ -139,12 +139,11 @@ static int clk_half_divider_set_rate(struct clk_hw *hw, unsigned long rate,
 	return 0;
 }
 
-const struct clk_ops clk_half_divider_ops = {
+static const struct clk_ops clk_half_divider_ops = {
 	.recalc_rate = clk_half_divider_recalc_rate,
 	.round_rate = clk_half_divider_round_rate,
 	.set_rate = clk_half_divider_set_rate,
 };
-EXPORT_SYMBOL_GPL(clk_half_divider_ops);
 
 /**
  * Register a clock branch.

drivers/clk/rockchip/clk-px30.c

@@ -167,6 +167,10 @@ PNAME(mux_uart5_p)		= { "clk_uart5_src", "clk_uart5_np5", "clk_uart5_frac" };
 PNAME(mux_cif_out_p)		= { "xin24m", "dummy_cpll", "npll", "usb480m" };
 PNAME(mux_dclk_vopb_p)		= { "dclk_vopb_src", "dclk_vopb_frac", "xin24m" };
 PNAME(mux_dclk_vopl_p)		= { "dclk_vopl_src", "dclk_vopl_frac", "xin24m" };
+PNAME(mux_nandc_p)		= { "clk_nandc_div", "clk_nandc_div50" };
+PNAME(mux_sdio_p)		= { "clk_sdio_div", "clk_sdio_div50" };
+PNAME(mux_emmc_p)		= { "clk_emmc_div", "clk_emmc_div50" };
+PNAME(mux_sdmmc_p)		= { "clk_sdmmc_div", "clk_sdmmc_div50" };
 PNAME(mux_gmac_p)		= { "clk_gmac_src", "gmac_clkin" };
 PNAME(mux_gmac_rmii_sel_p)	= { "clk_gmac_rx_tx_div20", "clk_gmac_rx_tx_div2" };
 PNAME(mux_rtc32k_pmu_p)		= { "xin32k", "pmu_pvtm_32k", "clk_rtc32k_frac", };
@@ -460,16 +464,40 @@ static struct rockchip_clk_branch px30_clk_branches[] __initdata = {
 	/* PD_MMC_NAND */
 	GATE(HCLK_MMC_NAND, "hclk_mmc_nand", "hclk_peri_pre", 0,
 			PX30_CLKGATE_CON(6), 0, GFLAGS),
-	COMPOSITE(SCLK_NANDC, "clk_nandc", mux_gpll_cpll_npll_p, 0,
+	COMPOSITE(SCLK_NANDC_DIV, "clk_nandc_div", mux_gpll_cpll_npll_p, 0,
 			PX30_CLKSEL_CON(15), 6, 2, MFLAGS, 0, 5, DFLAGS,
+			PX30_CLKGATE_CON(5), 11, GFLAGS),
+	COMPOSITE(SCLK_NANDC_DIV50, "clk_nandc_div50", mux_gpll_cpll_npll_p, 0,
+			PX30_CLKSEL_CON(15), 6, 2, MFLAGS, 8, 5, DFLAGS,
+			PX30_CLKGATE_CON(5), 12, GFLAGS),
+	COMPOSITE_NODIV(SCLK_NANDC, "clk_nandc", mux_nandc_p,
+			CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
+			PX30_CLKSEL_CON(15), 15, 1, MFLAGS,
 			PX30_CLKGATE_CON(5), 13, GFLAGS),
 
-	COMPOSITE(SCLK_SDIO, "clk_sdio", mux_gpll_cpll_npll_xin24m_p, 0,
+	COMPOSITE(SCLK_SDIO_DIV, "clk_sdio_div", mux_gpll_cpll_npll_xin24m_p, 0,
 			PX30_CLKSEL_CON(18), 14, 2, MFLAGS, 0, 8, DFLAGS,
+			PX30_CLKGATE_CON(6), 1, GFLAGS),
+	COMPOSITE_DIV_OFFSET(SCLK_SDIO_DIV50, "clk_sdio_div50",
+			mux_gpll_cpll_npll_xin24m_p, 0,
+			PX30_CLKSEL_CON(18), 14, 2, MFLAGS,
+			PX30_CLKSEL_CON(19), 0, 8, DFLAGS,
+			PX30_CLKGATE_CON(6), 2, GFLAGS),
+	COMPOSITE_NODIV(SCLK_SDIO, "clk_sdio", mux_sdio_p,
+			CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
+			PX30_CLKSEL_CON(19), 15, 1, MFLAGS,
 			PX30_CLKGATE_CON(6), 3, GFLAGS),
 
-	COMPOSITE(SCLK_EMMC, "clk_emmc", mux_gpll_cpll_npll_xin24m_p, 0,
+	COMPOSITE(SCLK_EMMC_DIV, "clk_emmc_div", mux_gpll_cpll_npll_xin24m_p, 0,
 			PX30_CLKSEL_CON(20), 14, 2, MFLAGS, 0, 8, DFLAGS,
+			PX30_CLKGATE_CON(6), 4, GFLAGS),
+	COMPOSITE_DIV_OFFSET(SCLK_EMMC_DIV50, "clk_emmc_div50", mux_gpll_cpll_npll_xin24m_p, 0,
+			PX30_CLKSEL_CON(20), 14, 2, MFLAGS,
+			PX30_CLKSEL_CON(21), 0, 8, DFLAGS,
+			PX30_CLKGATE_CON(6), 5, GFLAGS),
+	COMPOSITE_NODIV(SCLK_EMMC, "clk_emmc", mux_emmc_p,
+			CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
+			PX30_CLKSEL_CON(21), 15, 1, MFLAGS,
 			PX30_CLKGATE_CON(6), 6, GFLAGS),
 
 	COMPOSITE(SCLK_SFC, "clk_sfc", mux_gpll_cpll_p, 0,
@@ -494,8 +522,16 @@ static struct rockchip_clk_branch px30_clk_branches[] __initdata = {
 	/* PD_SDCARD */
 	GATE(0, "hclk_sdmmc_pre", "hclk_peri_pre", 0,
 			PX30_CLKGATE_CON(6), 12, GFLAGS),
-	COMPOSITE(SCLK_SDMMC, "clk_sdmmc", mux_gpll_cpll_npll_xin24m_p, 0,
+	COMPOSITE(SCLK_SDMMC_DIV, "clk_sdmmc_div", mux_gpll_cpll_npll_xin24m_p, 0,
 			PX30_CLKSEL_CON(16), 14, 2, MFLAGS, 0, 8, DFLAGS,
+			PX30_CLKGATE_CON(6), 13, GFLAGS),
+	COMPOSITE_DIV_OFFSET(SCLK_SDMMC_DIV50, "clk_sdmmc_div50", mux_gpll_cpll_npll_xin24m_p, 0,
+			PX30_CLKSEL_CON(16), 14, 2, MFLAGS,
+			PX30_CLKSEL_CON(17), 0, 8, DFLAGS,
+			PX30_CLKGATE_CON(6), 14, GFLAGS),
+	COMPOSITE_NODIV(SCLK_SDMMC, "clk_sdmmc", mux_sdmmc_p,
+			CLK_SET_RATE_PARENT | CLK_SET_RATE_NO_REPARENT,
+			PX30_CLKSEL_CON(17), 15, 1, MFLAGS,
 			PX30_CLKGATE_CON(6), 15, GFLAGS),
 
 	/* PD_USB */
@@ -763,29 +799,29 @@ static struct rockchip_clk_branch px30_clk_branches[] __initdata = {
 	GATE(0, "pclk_ddrphy", "pclk_top_pre", CLK_IGNORE_UNUSED, PX30_CLKGATE_CON(16), 3, GFLAGS),
 	GATE(PCLK_MIPIDSIPHY, "pclk_mipidsiphy", "pclk_top_pre", 0, PX30_CLKGATE_CON(16), 4, GFLAGS),
 	GATE(PCLK_MIPICSIPHY, "pclk_mipicsiphy", "pclk_top_pre", 0, PX30_CLKGATE_CON(16), 5, GFLAGS),
-	GATE(PCLK_USB_GRF, "pclk_usb_grf", "pclk_top_pre", CLK_IGNORE_UNUSED, PX30_CLKGATE_CON(16), 6, GFLAGS),
+	GATE(PCLK_USB_GRF, "pclk_usb_grf", "pclk_top_pre", 0, PX30_CLKGATE_CON(16), 6, GFLAGS),
 	GATE(0, "pclk_cpu_hoost", "pclk_top_pre", CLK_IGNORE_UNUSED, PX30_CLKGATE_CON(16), 7, GFLAGS),
 
 	/* PD_VI */
-	GATE(0, "aclk_vi_niu", "aclk_vi_pre", CLK_IGNORE_UNUSED, PX30_CLKGATE_CON(4), 15, GFLAGS),
+	GATE(0, "aclk_vi_niu", "aclk_vi_pre", 0, PX30_CLKGATE_CON(4), 15, GFLAGS),
 	GATE(ACLK_CIF, "aclk_cif", "aclk_vi_pre", 0, PX30_CLKGATE_CON(5), 1, GFLAGS),
 	GATE(ACLK_ISP, "aclk_isp", "aclk_vi_pre", 0, PX30_CLKGATE_CON(5), 3, GFLAGS),
-	GATE(0, "hclk_vi_niu", "hclk_vi_pre", CLK_IGNORE_UNUSED, PX30_CLKGATE_CON(5), 0, GFLAGS),
+	GATE(0, "hclk_vi_niu", "hclk_vi_pre", 0, PX30_CLKGATE_CON(5), 0, GFLAGS),
 	GATE(HCLK_CIF, "hclk_cif", "hclk_vi_pre", 0, PX30_CLKGATE_CON(5), 2, GFLAGS),
 	GATE(HCLK_ISP, "hclk_isp", "hclk_vi_pre", 0, PX30_CLKGATE_CON(5), 4, GFLAGS),
 
 	/* PD_VO */
-	GATE(0, "aclk_vo_niu", "aclk_vo_pre", CLK_IGNORE_UNUSED, PX30_CLKGATE_CON(3), 0, GFLAGS),
+	GATE(0, "aclk_vo_niu", "aclk_vo_pre", 0, PX30_CLKGATE_CON(3), 0, GFLAGS),
 	GATE(ACLK_VOPB, "aclk_vopb", "aclk_vo_pre", 0, PX30_CLKGATE_CON(3), 3, GFLAGS),
 	GATE(ACLK_RGA, "aclk_rga", "aclk_vo_pre", 0, PX30_CLKGATE_CON(3), 7, GFLAGS),
 	GATE(ACLK_VOPL, "aclk_vopl", "aclk_vo_pre", 0, PX30_CLKGATE_CON(3), 5, GFLAGS),
 
-	GATE(0, "hclk_vo_niu", "hclk_vo_pre", CLK_IGNORE_UNUSED, PX30_CLKGATE_CON(3), 1, GFLAGS),
+	GATE(0, "hclk_vo_niu", "hclk_vo_pre", 0, PX30_CLKGATE_CON(3), 1, GFLAGS),
 	GATE(HCLK_VOPB, "hclk_vopb", "hclk_vo_pre", 0, PX30_CLKGATE_CON(3), 4, GFLAGS),
 	GATE(HCLK_RGA, "hclk_rga", "hclk_vo_pre", 0, PX30_CLKGATE_CON(3), 8, GFLAGS),
 	GATE(HCLK_VOPL, "hclk_vopl", "hclk_vo_pre", 0, PX30_CLKGATE_CON(3), 6, GFLAGS),
 
-	GATE(0, "pclk_vo_niu", "pclk_vo_pre", CLK_IGNORE_UNUSED, PX30_CLKGATE_CON(3), 2, GFLAGS),
+	GATE(0, "pclk_vo_niu", "pclk_vo_pre", 0, PX30_CLKGATE_CON(3), 2, GFLAGS),
 	GATE(PCLK_MIPI_DSI, "pclk_mipi_dsi", "pclk_vo_pre", 0, PX30_CLKGATE_CON(3), 9, GFLAGS),
 
 	/* PD_BUS */
@@ -940,7 +976,7 @@ static struct rockchip_clk_branch px30_clk_pmu_branches[] __initdata = {
 	GATE(0, "pclk_cru_pmu", "pclk_pmu_pre", CLK_IGNORE_UNUSED, PX30_PMU_CLKGATE_CON(0), 8, GFLAGS),
 };
 
-static const char *const px30_pmucru_critical_clocks[] __initconst = {
+static const char *const px30_cru_critical_clocks[] __initconst = {
 	"aclk_bus_pre",
 	"pclk_bus_pre",
 	"hclk_bus_pre",
@@ -950,10 +986,16 @@ static const char *const px30_pmucru_critical_clocks[] __initconst = {
 	"pclk_top_pre",
 	"pclk_pmu_pre",
 	"hclk_usb_niu",
+	"pclk_vo_niu",
+	"aclk_vo_niu",
+	"hclk_vo_niu",
+	"aclk_vi_niu",
+	"hclk_vi_niu",
 	"pll_npll",
 	"usb480m",
 	"clk_uart2",
 	"pclk_uart2",
+	"pclk_usb_grf",
 };
 
 static void __init px30_clk_init(struct device_node *np)
@@ -985,6 +1027,9 @@ static void __init px30_clk_init(struct device_node *np)
 				     &px30_cpuclk_data, px30_cpuclk_rates,
 				     ARRAY_SIZE(px30_cpuclk_rates));
 
+	rockchip_clk_protect_critical(px30_cru_critical_clocks,
+				      ARRAY_SIZE(px30_cru_critical_clocks));
+
 	rockchip_register_softrst(np, 12, reg_base + PX30_SOFTRST_CON(0),
 				  ROCKCHIP_SOFTRST_HIWORD_MASK);
 
@@ -1017,9 +1062,6 @@ static void __init px30_pmu_clk_init(struct device_node *np)
 	rockchip_clk_register_branches(ctx, px30_clk_pmu_branches,
 				       ARRAY_SIZE(px30_clk_pmu_branches));
 
-	rockchip_clk_protect_critical(px30_pmucru_critical_clocks,
-				      ARRAY_SIZE(px30_pmucru_critical_clocks));
-
 	rockchip_clk_of_add_provider(np, ctx);
 }
 CLK_OF_DECLARE(px30_cru_pmu, "rockchip,px30-pmucru", px30_pmu_clk_init);

drivers/clk/sprd/common.c

@@ -45,7 +45,7 @@ int sprd_clk_regmap_init(struct platform_device *pdev,
 
 	if (of_find_property(node, "sprd,syscon", NULL)) {
 		regmap = syscon_regmap_lookup_by_phandle(node, "sprd,syscon");
-		if (IS_ERR_OR_NULL(regmap)) {
+		if (IS_ERR(regmap)) {
 			pr_err("%s: failed to get syscon regmap\n", __func__);
 			return PTR_ERR(regmap);
 		}

drivers/clk/tegra/Makefile

@@ -17,7 +17,9 @@ obj-y					+= clk-tegra-fixed.o
 obj-y					+= clk-tegra-super-gen4.o
 obj-$(CONFIG_TEGRA_CLK_EMC)		+= clk-emc.o
 obj-$(CONFIG_ARCH_TEGRA_2x_SOC)         += clk-tegra20.o
+obj-$(CONFIG_ARCH_TEGRA_2x_SOC)		+= clk-tegra20-emc.o
 obj-$(CONFIG_ARCH_TEGRA_3x_SOC)         += clk-tegra30.o
+obj-$(CONFIG_ARCH_TEGRA_3x_SOC)		+= clk-tegra20-emc.o
 obj-$(CONFIG_ARCH_TEGRA_114_SOC)	+= clk-tegra114.o
 obj-$(CONFIG_ARCH_TEGRA_124_SOC)	+= clk-tegra124.o
 obj-$(CONFIG_TEGRA_CLK_DFLL)		+= clk-tegra124-dfll-fcpu.o

drivers/clk/tegra/clk-dfll.c

@@ -1487,6 +1487,7 @@ static int dfll_init(struct tegra_dfll *td)
 	td->last_unrounded_rate = 0;
 
 	pm_runtime_enable(td->dev);
+	pm_runtime_irq_safe(td->dev);
 	pm_runtime_get_sync(td->dev);
 
 	dfll_set_mode(td, DFLL_DISABLED);
@@ -1513,6 +1514,61 @@ static int dfll_init(struct tegra_dfll *td)
 	return ret;
 }
 
+/**
+ * tegra_dfll_suspend - check DFLL is disabled
+ * @dev: DFLL device *
+ *
+ * DFLL clock should be disabled by the CPUFreq driver. So, make
+ * sure it is disabled and disable all clocks needed by the DFLL.
+ */
+int tegra_dfll_suspend(struct device *dev)
+{
+	struct tegra_dfll *td = dev_get_drvdata(dev);
+
+	if (dfll_is_running(td)) {
+		dev_err(td->dev, "DFLL still enabled while suspending\n");
+		return -EBUSY;
+	}
+
+	reset_control_assert(td->dvco_rst);
+
+	return 0;
+}
+EXPORT_SYMBOL(tegra_dfll_suspend);
+
+/**
+ * tegra_dfll_resume - reinitialize DFLL on resume
+ * @dev: DFLL instance
+ *
+ * DFLL is disabled and reset during suspend and resume.
+ * So, reinitialize the DFLL IP block back for use.
+ * DFLL clock is enabled later in closed loop mode by CPUFreq
+ * driver before switching its clock source to DFLL output.
+ */
+int tegra_dfll_resume(struct device *dev)
+{
+	struct tegra_dfll *td = dev_get_drvdata(dev);
+
+	reset_control_deassert(td->dvco_rst);
+
+	pm_runtime_get_sync(td->dev);
+
+	dfll_set_mode(td, DFLL_DISABLED);
+	dfll_set_default_params(td);
+
+	if (td->soc->init_clock_trimmers)
+		td->soc->init_clock_trimmers();
+
+	dfll_set_open_loop_config(td);
+
+	dfll_init_out_if(td);
+
+	pm_runtime_put_sync(td->dev);
+
+	return 0;
+}
+EXPORT_SYMBOL(tegra_dfll_resume);
+
 /*
  * DT data fetch
  */

drivers/clk/tegra/clk-dfll.h

@@ -42,5 +42,7 @@ int tegra_dfll_register(struct platform_device *pdev,
 struct tegra_dfll_soc_data *tegra_dfll_unregister(struct platform_device *pdev);
 int tegra_dfll_runtime_suspend(struct device *dev);
 int tegra_dfll_runtime_resume(struct device *dev);
+int tegra_dfll_suspend(struct device *dev);
+int tegra_dfll_resume(struct device *dev);
 
 #endif /* __DRIVERS_CLK_TEGRA_CLK_DFLL_H */

drivers/clk/tegra/clk-divider.c

@@ -109,10 +109,21 @@ static int clk_frac_div_set_rate(struct clk_hw *hw, unsigned long rate,
 	return 0;
 }
 
+static void clk_divider_restore_context(struct clk_hw *hw)
+{
+	struct clk_hw *parent = clk_hw_get_parent(hw);
+	unsigned long parent_rate = clk_hw_get_rate(parent);
+	unsigned long rate = clk_hw_get_rate(hw);
+
+	if (clk_frac_div_set_rate(hw, rate, parent_rate) < 0)
+		WARN_ON(1);
+}
+
 const struct clk_ops tegra_clk_frac_div_ops = {
 	.recalc_rate = clk_frac_div_recalc_rate,
 	.set_rate = clk_frac_div_set_rate,
 	.round_rate = clk_frac_div_round_rate,
+	.restore_context = clk_divider_restore_context,
 };
 
 struct clk *tegra_clk_register_divider(const char *name,