clk/qcom: add mnd_width to clk_rcg_set_rate_mnd()

This property is needed on some platforms to ensure that only the
relevant bits are set in the M/N/D registers.

Reviewed-by: Sumit Garg <sumit.garg@linaro.org>
Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>

6 files changed, 22 insertions, 20 deletions

diff --git a/drivers/clk/qcom/clock-apq8016.c b/drivers/clk/qcom/clock-apq8016.c
index 3f44252c453..498e8ef6780 100644
--- a/drivers/clk/qcom/clock-apq8016.c
+++ b/drivers/clk/qcom/clock-apq8016.c
@@ -86,7 +86,7 @@ static int clk_init_sdc(struct msm_clk_priv *priv, int slot, uint rate)
 	clk_enable_cbc(priv->base + SDCC_AHB_CBCR(slot));
 	/* 800Mhz/div, gpll0 */
 	clk_rcg_set_rate_mnd(priv->base, &sdc_regs[slot], div, 0, 0,
-			     CFG_CLK_SRC_GPLL0);
+			     CFG_CLK_SRC_GPLL0, 8);
 	clk_enable_gpll0(priv->base, &gpll0_vote_clk);
 	clk_enable_cbc(priv->base + SDCC_APPS_CBCR(slot));
 
@@ -109,7 +109,7 @@ static int clk_init_uart(struct msm_clk_priv *priv)
 
 	/* 7372800 uart block clock @ GPLL0 */
 	clk_rcg_set_rate_mnd(priv->base, &uart2_regs, 1, 144, 15625,
-			     CFG_CLK_SRC_GPLL0);
+			     CFG_CLK_SRC_GPLL0, 16);
 
 	/* Vote for gpll0 clock */
 	clk_enable_gpll0(priv->base, &gpll0_vote_clk);
diff --git a/drivers/clk/qcom/clock-apq8096.c b/drivers/clk/qcom/clock-apq8096.c
index 75633a7c2af..367c0f06ae2 100644
--- a/drivers/clk/qcom/clock-apq8096.c
+++ b/drivers/clk/qcom/clock-apq8096.c
@@ -69,7 +69,7 @@ static int clk_init_sdc(struct msm_clk_priv *priv, uint rate)
 
 	clk_enable_cbc(priv->base + SDCC2_AHB_CBCR);
 	clk_rcg_set_rate_mnd(priv->base, &sdc_regs, div, 0, 0,
-			     CFG_CLK_SRC_GPLL0);
+			     CFG_CLK_SRC_GPLL0, 8);
 	clk_enable_gpll0(priv->base, &gpll0_vote_clk);
 	clk_enable_cbc(priv->base + SDCC2_APPS_CBCR);
 
@@ -91,7 +91,7 @@ static int clk_init_uart(struct msm_clk_priv *priv)
 
 	/* 7372800 uart block clock @ GPLL0 */
 	clk_rcg_set_rate_mnd(priv->base, &uart2_regs, 1, 192, 15625,
-			     CFG_CLK_SRC_GPLL0);
+			     CFG_CLK_SRC_GPLL0, 16);
 
 	/* Vote for gpll0 clock */
 	clk_enable_gpll0(priv->base, &gpll0_vote_clk);
diff --git a/drivers/clk/qcom/clock-qcom.c b/drivers/clk/qcom/clock-qcom.c
index 77bcaacd158..fc478554f98 100644
--- a/drivers/clk/qcom/clock-qcom.c
+++ b/drivers/clk/qcom/clock-qcom.c
@@ -83,7 +83,7 @@ void clk_bcr_update(phys_addr_t apps_cmd_rcgr)
 
 /* root set rate for clocks with half integer and MND divider */
 void clk_rcg_set_rate_mnd(phys_addr_t base, const struct bcr_regs *regs,
-			  int div, int m, int n, int source)
+			  int div, int m, int n, int source, u8 mnd_width)
 {
 	u32 cfg;
 	/* M value for MND divider. */
@@ -92,11 +92,14 @@ void clk_rcg_set_rate_mnd(phys_addr_t base, const struct bcr_regs *regs,
 	u32 n_val = ~((n) - (m)) * !!(n);
 	/* NOT 2D value for MND divider. */
 	u32 d_val = ~(n);
+	u32 mask = BIT(mnd_width) - 1;
+
+	debug("m %#x n %#x d %#x div %#x mask %#x\n", m_val, n_val, d_val, div, mask);
 
 	/* Program MND values */
-	writel(m_val, base + regs->M);
-	writel(n_val, base + regs->N);
-	writel(d_val, base + regs->D);
+	writel(m_val & mask, base + regs->M);
+	writel(n_val & mask, base + regs->N);
+	writel(d_val & mask, base + regs->D);
 
 	/* setup src select and divider */
 	cfg  = readl(base + regs->cfg_rcgr);
diff --git a/drivers/clk/qcom/clock-qcom.h b/drivers/clk/qcom/clock-qcom.h
index 86f9ff6eb2f..24a32cb9666 100644
--- a/drivers/clk/qcom/clock-qcom.h
+++ b/drivers/clk/qcom/clock-qcom.h
@@ -72,7 +72,7 @@ void clk_bcr_update(phys_addr_t apps_cmd_rgcr);
 void clk_enable_cbc(phys_addr_t cbcr);
 void clk_enable_vote_clk(phys_addr_t base, const struct vote_clk *vclk);
 void clk_rcg_set_rate_mnd(phys_addr_t base, const struct bcr_regs *regs,
-			  int div, int m, int n, int source);
+			  int div, int m, int n, int source, u8 mnd_width);
 void clk_rcg_set_rate(phys_addr_t base, const struct bcr_regs *regs, int div,
 		      int source);
 
diff --git a/drivers/clk/qcom/clock-qcs404.c b/drivers/clk/qcom/clock-qcs404.c
index 9ad580b50fc..f234ab5d654 100644
--- a/drivers/clk/qcom/clock-qcs404.c
+++ b/drivers/clk/qcom/clock-qcs404.c
@@ -195,7 +195,7 @@ static ulong qcs404_clk_set_rate(struct clk *clk, ulong rate)
 	case GCC_BLSP1_UART2_APPS_CLK:
 		/* UART: 115200 */
 		clk_rcg_set_rate_mnd(priv->base, &uart2_regs, 0, 12, 125,
-				     CFG_CLK_SRC_CXO);
+				     CFG_CLK_SRC_CXO, 16);
 		clk_enable_cbc(priv->base + BLSP1_UART2_APPS_CBCR);
 		break;
 	case GCC_BLSP1_AHB_CLK:
@@ -204,7 +204,7 @@ static ulong qcs404_clk_set_rate(struct clk *clk, ulong rate)
 	case GCC_SDCC1_APPS_CLK:
 		/* SDCC1: 200MHz */
 		clk_rcg_set_rate_mnd(priv->base, &sdc_regs, 4, 0, 0,
-				     CFG_CLK_SRC_GPLL0);
+				     CFG_CLK_SRC_GPLL0, 8);
 		clk_enable_gpll0(priv->base, &gpll0_vote_clk);
 		clk_enable_cbc(priv->base + SDCC_APPS_CBCR(1));
 		break;
@@ -214,16 +214,16 @@ static ulong qcs404_clk_set_rate(struct clk *clk, ulong rate)
 	case GCC_ETH_RGMII_CLK:
 		if (rate == 250000000)
 			clk_rcg_set_rate_mnd(priv->base, &emac_regs, 2, 0, 0,
-					     CFG_CLK_SRC_GPLL1);
+					     CFG_CLK_SRC_GPLL1, 8);
 		else if (rate == 125000000)
 			clk_rcg_set_rate_mnd(priv->base, &emac_regs, 4, 0, 0,
-					     CFG_CLK_SRC_GPLL1);
+					     CFG_CLK_SRC_GPLL1, 8);
 		else if (rate == 50000000)
 			clk_rcg_set_rate_mnd(priv->base, &emac_regs, 10, 0, 0,
-					     CFG_CLK_SRC_GPLL1);
+					     CFG_CLK_SRC_GPLL1, 8);
 		else if (rate == 5000000)
 			clk_rcg_set_rate_mnd(priv->base, &emac_regs, 2, 1, 50,
-					     CFG_CLK_SRC_GPLL1);
+					     CFG_CLK_SRC_GPLL1, 8);
 		break;
 	default:
 		return 0;
@@ -240,7 +240,7 @@ static int qcs404_clk_enable(struct clk *clk)
 	case GCC_USB30_MASTER_CLK:
 		clk_enable_cbc(priv->base + USB30_MASTER_CBCR);
 		clk_rcg_set_rate_mnd(priv->base, &usb30_master_regs, 4, 0, 0,
-				     CFG_CLK_SRC_GPLL0);
+				     CFG_CLK_SRC_GPLL0, 8);
 		break;
 	case GCC_SYS_NOC_USB3_CLK:
 		clk_enable_cbc(priv->base + SYS_NOC_USB3_CBCR);
@@ -262,14 +262,14 @@ static int qcs404_clk_enable(struct clk *clk)
 		clk_enable_cbc(priv->base + ETH_PTP_CBCR);
 		clk_enable_gpll0(priv->base, &gpll1_vote_clk);
 		clk_rcg_set_rate_mnd(priv->base, &emac_ptp_regs, 2, 0, 0,
-				     CFG_CLK_SRC_GPLL1);
+				     CFG_CLK_SRC_GPLL1, 8);
 		break;
 	case GCC_ETH_RGMII_CLK:
 		/* SPEED_1000: freq -> 250MHz */
 		clk_enable_cbc(priv->base + ETH_RGMII_CBCR);
 		clk_enable_gpll0(priv->base, &gpll1_vote_clk);
 		clk_rcg_set_rate_mnd(priv->base, &emac_regs, 2, 0, 0,
-				     CFG_CLK_SRC_GPLL1);
+				     CFG_CLK_SRC_GPLL1, 8);
 		break;
 	case GCC_ETH_SLAVE_AHB_CLK:
 		clk_enable_cbc(priv->base + ETH_SLAVE_AHB_CBCR);
diff --git a/drivers/clk/qcom/clock-sdm845.c b/drivers/clk/qcom/clock-sdm845.c
index fc9a783f735..6af1f38302d 100644
--- a/drivers/clk/qcom/clock-sdm845.c
+++ b/drivers/clk/qcom/clock-sdm845.c
@@ -89,8 +89,7 @@ static ulong sdm845_clk_set_rate(struct clk *clk, ulong rate)
 	case GCC_QUPV3_WRAP1_S1_CLK: /* UART9 */
 		freq = qcom_find_freq(ftbl_gcc_qupv3_wrap0_s0_clk_src, rate);
 		clk_rcg_set_rate_mnd(priv->base, &uart2_regs,
-				     freq->pre_div, freq->m, freq->n, freq->src);
-
+				     freq->pre_div, freq->m, freq->n, freq->src, 16);
 		return freq->freq;
 	default:
 		return 0;