Fixes in clk drivers and some clk rate range fixes in the core as well.

- Make sure the struct clk_rate_request is more sane.
 
  - Remove a WARN_ON that was triggering for clks with no parents
    that can change frequency.
 
  - Fix bad i2c bus transactions on Renesas rs9.
 
  - Actually return an error in clk_mt8195_topck_probe() on an error
    path.
 
  - Keep the GPU memories powered while the clk isn't enabled on
    Qualcomm's sc7280 SoC.
 
  - Fix the parent clk for HSCIF modules on Renesas' R-Car V4H SoC.
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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 in clk drivers and some clk rate range fixes in the core as
  well:

   - Make sure the struct clk_rate_request is more sane

   - Remove a WARN_ON that was triggering for clks with no parents that
     can change frequency

   - Fix bad i2c bus transactions on Renesas rs9

   - Actually return an error in clk_mt8195_topck_probe() on an error
     path

   - Keep the GPU memories powered while the clk isn't enabled on
     Qualcomm's sc7280 SoC

   - Fix the parent clk for HSCIF modules on Renesas' R-Car V4H SoC"

* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
  clk: qcom: Update the force mem core bit for GPU clocks
  clk: Initialize max_rate in struct clk_rate_request
  clk: Initialize the clk_rate_request even if clk_core is NULL
  clk: Remove WARN_ON NULL parent in clk_core_init_rate_req()
  clk: renesas: r8a779g0: Fix HSCIF parent clocks
  clk: renesas: r8a779g0: Add SASYNCPER clocks
  clk: mediatek: clk-mt8195-topckgen: Fix error return code in clk_mt8195_topck_probe()
  clk: sifive: select by default if SOC_SIFIVE
  clk: rs9: Fix I2C accessors

drivers/clk/clk-renesas-pcie.c

@@ -90,13 +90,66 @@ static const struct regmap_access_table rs9_writeable_table = {
 	.n_yes_ranges = ARRAY_SIZE(rs9_writeable_ranges),
 };
 
+static int rs9_regmap_i2c_write(void *context,
+				unsigned int reg, unsigned int val)
+{
+	struct i2c_client *i2c = context;
+	const u8 data[3] = { reg, 1, val };
+	const int count = ARRAY_SIZE(data);
+	int ret;
+
+	ret = i2c_master_send(i2c, data, count);
+	if (ret == count)
+		return 0;
+	else if (ret < 0)
+		return ret;
+	else
+		return -EIO;
+}
+
+static int rs9_regmap_i2c_read(void *context,
+			       unsigned int reg, unsigned int *val)
+{
+	struct i2c_client *i2c = context;
+	struct i2c_msg xfer[2];
+	u8 txdata = reg;
+	u8 rxdata[2];
+	int ret;
+
+	xfer[0].addr = i2c->addr;
+	xfer[0].flags = 0;
+	xfer[0].len = 1;
+	xfer[0].buf = (void *)&txdata;
+
+	xfer[1].addr = i2c->addr;
+	xfer[1].flags = I2C_M_RD;
+	xfer[1].len = 2;
+	xfer[1].buf = (void *)rxdata;
+
+	ret = i2c_transfer(i2c->adapter, xfer, 2);
+	if (ret < 0)
+		return ret;
+	if (ret != 2)
+		return -EIO;
+
+	/*
+	 * Byte 0 is transfer length, which is always 1 due
+	 * to BCP register programming to 1 in rs9_probe(),
+	 * ignore it and use data from Byte 1.
+	 */
+	*val = rxdata[1];
+	return 0;
+}
+
 static const struct regmap_config rs9_regmap_config = {
 	.reg_bits = 8,
 	.val_bits = 8,
-	.cache_type = REGCACHE_FLAT,
-	.max_register = 0x8,
+	.cache_type = REGCACHE_NONE,
+	.max_register = RS9_REG_BCP,
 	.rd_table = &rs9_readable_table,
 	.wr_table = &rs9_writeable_table,
+	.reg_write = rs9_regmap_i2c_write,
+	.reg_read = rs9_regmap_i2c_read,
 };
 
 static int rs9_get_output_config(struct rs9_driver_data *rs9, int idx)
@@ -242,11 +295,17 @@ static int rs9_probe(struct i2c_client *client)
 			return ret;
 	}
 
-	rs9->regmap = devm_regmap_init_i2c(client, &rs9_regmap_config);
+	rs9->regmap = devm_regmap_init(&client->dev, NULL,
+				       client, &rs9_regmap_config);
 	if (IS_ERR(rs9->regmap))
 		return dev_err_probe(&client->dev, PTR_ERR(rs9->regmap),
 				     "Failed to allocate register map\n");
 
+	/* Always read back 1 Byte via I2C */
+	ret = regmap_write(rs9->regmap, RS9_REG_BCP, 1);
+	if (ret < 0)
+		return ret;
+
 	/* Register clock */
 	for (i = 0; i < rs9->chip_info->num_clks; i++) {
 		snprintf(name, 5, "DIF%d", i);

drivers/clk/clk.c

@@ -1459,10 +1459,14 @@ static void clk_core_init_rate_req(struct clk_core * const core,
 {
 	struct clk_core *parent;
 
-	if (WARN_ON(!core || !req))
+	if (WARN_ON(!req))
 		return;
 
 	memset(req, 0, sizeof(*req));
+	req->max_rate = ULONG_MAX;
+
+	if (!core)
+		return;
 
 	req->rate = rate;
 	clk_core_get_boundaries(core, &req->min_rate, &req->max_rate);

drivers/clk/mediatek/clk-mt8195-topckgen.c

@@ -1270,8 +1270,10 @@ static int clk_mt8195_topck_probe(struct platform_device *pdev)
 	hw = devm_clk_hw_register_mux(&pdev->dev, "mfg_ck_fast_ref", mfg_fast_parents,
 				      ARRAY_SIZE(mfg_fast_parents), CLK_SET_RATE_PARENT,
 				      (base + 0x250), 8, 1, 0, &mt8195_clk_lock);
-	if (IS_ERR(hw))
+	if (IS_ERR(hw)) {
+		r = PTR_ERR(hw);
 		goto unregister_muxes;
+	}
 	top_clk_data->hws[CLK_TOP_MFG_CK_FAST_REF] = hw;
 
 	r = clk_mt8195_reg_mfg_mux_notifier(&pdev->dev,

drivers/clk/qcom/gcc-sc7280.c

@@ -3467,6 +3467,7 @@ static int gcc_sc7280_probe(struct platform_device *pdev)
 	regmap_update_bits(regmap, 0x28004, BIT(0), BIT(0));
 	regmap_update_bits(regmap, 0x28014, BIT(0), BIT(0));
 	regmap_update_bits(regmap, 0x71004, BIT(0), BIT(0));
+	regmap_update_bits(regmap, 0x7100C, BIT(13), BIT(13));
 
 	ret = qcom_cc_register_rcg_dfs(regmap, gcc_dfs_clocks,
 			ARRAY_SIZE(gcc_dfs_clocks));

drivers/clk/qcom/gpucc-sc7280.c

@@ -463,6 +463,7 @@ static int gpu_cc_sc7280_probe(struct platform_device *pdev)
 	 */
 	regmap_update_bits(regmap, 0x1170, BIT(0), BIT(0));
 	regmap_update_bits(regmap, 0x1098, BIT(0), BIT(0));
+	regmap_update_bits(regmap, 0x1098, BIT(13), BIT(13));
 
 	return qcom_cc_really_probe(pdev, &gpu_cc_sc7280_desc, regmap);
 }

drivers/clk/renesas/r8a779g0-cpg-mssr.c

@@ -47,6 +47,7 @@ enum clk_ids {
 	CLK_S0_VIO,
 	CLK_S0_VC,
 	CLK_S0_HSC,
+	CLK_SASYNCPER,
 	CLK_SV_VIP,
 	CLK_SV_IR,
 	CLK_SDSRC,
@@ -84,6 +85,7 @@ static const struct cpg_core_clk r8a779g0_core_clks[] __initconst = {
 	DEF_FIXED(".s0_vio",	CLK_S0_VIO,	CLK_PLL1_DIV2,	2, 1),
 	DEF_FIXED(".s0_vc",	CLK_S0_VC,	CLK_PLL1_DIV2,	2, 1),
 	DEF_FIXED(".s0_hsc",	CLK_S0_HSC,	CLK_PLL1_DIV2,	2, 1),
+	DEF_FIXED(".sasyncper",	CLK_SASYNCPER,	CLK_PLL5_DIV4,	3, 1),
 	DEF_FIXED(".sv_vip",	CLK_SV_VIP,	CLK_PLL1,	5, 1),
 	DEF_FIXED(".sv_ir",	CLK_SV_IR,	CLK_PLL1,	5, 1),
 	DEF_BASE(".sdsrc",	CLK_SDSRC,	CLK_TYPE_GEN4_SDSRC, CLK_PLL5),
@@ -128,6 +130,9 @@ static const struct cpg_core_clk r8a779g0_core_clks[] __initconst = {
 	DEF_FIXED("s0d4_hsc",	R8A779G0_CLK_S0D4_HSC,	CLK_S0_HSC,	4, 1),
 	DEF_FIXED("cl16m_hsc",	R8A779G0_CLK_CL16M_HSC,	CLK_S0_HSC,	48, 1),
 	DEF_FIXED("s0d2_cc",	R8A779G0_CLK_S0D2_CC,	CLK_S0,		2, 1),
+	DEF_FIXED("sasyncperd1",R8A779G0_CLK_SASYNCPERD1, CLK_SASYNCPER,1, 1),
+	DEF_FIXED("sasyncperd2",R8A779G0_CLK_SASYNCPERD2, CLK_SASYNCPER,2, 1),
+	DEF_FIXED("sasyncperd4",R8A779G0_CLK_SASYNCPERD4, CLK_SASYNCPER,4, 1),
 	DEF_FIXED("svd1_ir",	R8A779G0_CLK_SVD1_IR,	CLK_SV_IR,	1, 1),
 	DEF_FIXED("svd2_ir",	R8A779G0_CLK_SVD2_IR,	CLK_SV_IR,	2, 1),
 	DEF_FIXED("svd1_vip",	R8A779G0_CLK_SVD1_VIP,	CLK_SV_VIP,	1, 1),
@@ -153,10 +158,10 @@ static const struct mssr_mod_clk r8a779g0_mod_clks[] __initconst = {
 	DEF_MOD("avb0",		211,	R8A779G0_CLK_S0D4_HSC),
 	DEF_MOD("avb1",		212,	R8A779G0_CLK_S0D4_HSC),
 	DEF_MOD("avb2",		213,	R8A779G0_CLK_S0D4_HSC),
-	DEF_MOD("hscif0",	514,	R8A779G0_CLK_S0D3_PER),
-	DEF_MOD("hscif1",	515,	R8A779G0_CLK_S0D3_PER),
-	DEF_MOD("hscif2",	516,	R8A779G0_CLK_S0D3_PER),
-	DEF_MOD("hscif3",	517,	R8A779G0_CLK_S0D3_PER),
+	DEF_MOD("hscif0",	514,	R8A779G0_CLK_SASYNCPERD1),
+	DEF_MOD("hscif1",	515,	R8A779G0_CLK_SASYNCPERD1),
+	DEF_MOD("hscif2",	516,	R8A779G0_CLK_SASYNCPERD1),
+	DEF_MOD("hscif3",	517,	R8A779G0_CLK_SASYNCPERD1),
 	DEF_MOD("i2c0",		518,	R8A779G0_CLK_S0D6_PER),
 	DEF_MOD("i2c1",		519,	R8A779G0_CLK_S0D6_PER),
 	DEF_MOD("i2c2",		520,	R8A779G0_CLK_S0D6_PER),

drivers/clk/sifive/Kconfig

@@ -2,7 +2,8 @@
 
 menuconfig CLK_SIFIVE
 	bool "SiFive SoC driver support"
-	depends on RISCV || COMPILE_TEST
+	depends on SOC_SIFIVE || COMPILE_TEST
+	default SOC_SIFIVE
 	help
 	  SoC drivers for SiFive Linux-capable SoCs.
 
@@ -10,6 +11,7 @@ if CLK_SIFIVE
 
 config CLK_SIFIVE_PRCI
 	bool "PRCI driver for SiFive SoCs"
+	default SOC_SIFIVE
 	select RESET_CONTROLLER
 	select RESET_SIMPLE
 	select CLK_ANALOGBITS_WRPLL_CLN28HPC