X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=arch%2Farm%2Fcpu%2Farmv7%2Fmx6%2Fclock.c;h=d200531030e730301574f27943757ec50ab4f763;hb=84a6df09c78bc9e9cbc6265d99c9097f5f1079f2;hp=e1fb5abdeae00960d05cac99f84930eb1c6dd22e;hpb=d95b6ab87c609065e937810f04a84a16992b6f75;p=u-boot

diff --git a/arch/arm/cpu/armv7/mx6/clock.c b/arch/arm/cpu/armv7/mx6/clock.c
index e1fb5abdea..d200531030 100644
--- a/arch/arm/cpu/armv7/mx6/clock.c
+++ b/arch/arm/cpu/armv7/mx6/clock.c
@@ -36,6 +36,35 @@ void enable_ocotp_clk(unsigned char enable)
 }
 #endif
 
+#ifdef CONFIG_NAND_MXS
+void setup_gpmi_io_clk(u32 cfg)
+{
+	/* Disable clocks per ERR007177 from MX6 errata */
+	clrbits_le32(&imx_ccm->CCGR4,
+		     MXC_CCM_CCGR4_RAWNAND_U_BCH_INPUT_APB_MASK |
+		     MXC_CCM_CCGR4_RAWNAND_U_GPMI_BCH_INPUT_BCH_MASK |
+		     MXC_CCM_CCGR4_RAWNAND_U_GPMI_BCH_INPUT_GPMI_IO_MASK |
+		     MXC_CCM_CCGR4_RAWNAND_U_GPMI_INPUT_APB_MASK |
+		     MXC_CCM_CCGR4_PL301_MX6QPER1_BCH_MASK);
+
+	clrbits_le32(&imx_ccm->CCGR2, MXC_CCM_CCGR2_IOMUX_IPT_CLK_IO_MASK);
+
+	clrsetbits_le32(&imx_ccm->cs2cdr,
+			MXC_CCM_CS2CDR_ENFC_CLK_PODF_MASK |
+			MXC_CCM_CS2CDR_ENFC_CLK_PRED_MASK |
+			MXC_CCM_CS2CDR_ENFC_CLK_SEL_MASK,
+			cfg);
+
+	setbits_le32(&imx_ccm->CCGR2, MXC_CCM_CCGR2_IOMUX_IPT_CLK_IO_MASK);
+	setbits_le32(&imx_ccm->CCGR4,
+		     MXC_CCM_CCGR4_RAWNAND_U_BCH_INPUT_APB_MASK |
+		     MXC_CCM_CCGR4_RAWNAND_U_GPMI_BCH_INPUT_BCH_MASK |
+		     MXC_CCM_CCGR4_RAWNAND_U_GPMI_BCH_INPUT_GPMI_IO_MASK |
+		     MXC_CCM_CCGR4_RAWNAND_U_GPMI_INPUT_APB_MASK |
+		     MXC_CCM_CCGR4_PL301_MX6QPER1_BCH_MASK);
+}
+#endif
+
 void enable_usboh3_clk(unsigned char enable)
 {
 	u32 reg;
@@ -49,6 +78,67 @@ void enable_usboh3_clk(unsigned char enable)
 
 }
 
+#if defined(CONFIG_FEC_MXC) && !defined(CONFIG_MX6SX)
+void enable_enet_clk(unsigned char enable)
+{
+	u32 mask = MXC_CCM_CCGR1_ENET_CLK_ENABLE_MASK;
+
+	if (enable)
+		setbits_le32(&imx_ccm->CCGR1, mask);
+	else
+		clrbits_le32(&imx_ccm->CCGR1, mask);
+}
+#endif
+
+#ifdef CONFIG_MXC_UART
+void enable_uart_clk(unsigned char enable)
+{
+	u32 mask = MXC_CCM_CCGR5_UART_MASK | MXC_CCM_CCGR5_UART_SERIAL_MASK;
+
+	if (enable)
+		setbits_le32(&imx_ccm->CCGR5, mask);
+	else
+		clrbits_le32(&imx_ccm->CCGR5, mask);
+}
+#endif
+
+#ifdef CONFIG_SPI
+/* spi_num can be from 0 - 4 */
+int enable_cspi_clock(unsigned char enable, unsigned spi_num)
+{
+	u32 mask;
+
+	if (spi_num > 4)
+		return -EINVAL;
+
+	mask = MXC_CCM_CCGR_CG_MASK << (spi_num * 2);
+	if (enable)
+		setbits_le32(&imx_ccm->CCGR1, mask);
+	else
+		clrbits_le32(&imx_ccm->CCGR1, mask);
+
+	return 0;
+}
+#endif
+
+#ifdef CONFIG_MMC
+int enable_usdhc_clk(unsigned char enable, unsigned bus_num)
+{
+	u32 mask;
+
+	if (bus_num > 3)
+		return -EINVAL;
+
+	mask = MXC_CCM_CCGR_CG_MASK << (bus_num * 2 + 2);
+	if (enable)
+		setbits_le32(&imx_ccm->CCGR6, mask);
+	else
+		clrbits_le32(&imx_ccm->CCGR6, mask);
+
+	return 0;
+}
+#endif
+
 #ifdef CONFIG_SYS_I2C_MXC
 /* i2c_num can be from 0 - 2 */
 int enable_i2c_clk(unsigned char enable, unsigned i2c_num)
@@ -71,6 +161,24 @@ int enable_i2c_clk(unsigned char enable, unsigned i2c_num)
 }
 #endif
 
+/* spi_num can be from 0 - SPI_MAX_NUM */
+int enable_spi_clk(unsigned char enable, unsigned spi_num)
+{
+	u32 reg;
+	u32 mask;
+
+	if (spi_num > SPI_MAX_NUM)
+		return -EINVAL;
+
+	mask = MXC_CCM_CCGR_CG_MASK << (spi_num << 1);
+	reg = __raw_readl(&imx_ccm->CCGR1);
+	if (enable)
+		reg |= mask;
+	else
+		reg &= ~mask;
+	__raw_writel(reg, &imx_ccm->CCGR1);
+	return 0;
+}
 static u32 decode_pll(enum pll_clocks pll, u32 infreq)
 {
 	u32 div;
@@ -355,6 +463,27 @@ int enable_fec_anatop_clock(enum enet_freq freq)
 	reg &= ~BM_ANADIG_PLL_ENET_BYPASS;
 	writel(reg, &anatop->pll_enet);
 
+#ifdef CONFIG_MX6SX
+	/*
+	 * Set enet ahb clock to 200MHz
+	 * pll2_pfd2_396m-> ENET_PODF-> ENET_AHB
+	 */
+	reg = readl(&imx_ccm->chsccdr);
+	reg &= ~(MXC_CCM_CHSCCDR_ENET_PRE_CLK_SEL_MASK
+		 | MXC_CCM_CHSCCDR_ENET_PODF_MASK
+		 | MXC_CCM_CHSCCDR_ENET_CLK_SEL_MASK);
+	/* PLL2 PFD2 */
+	reg |= (4 << MXC_CCM_CHSCCDR_ENET_PRE_CLK_SEL_OFFSET);
+	/* Div = 2*/
+	reg |= (1 << MXC_CCM_CHSCCDR_ENET_PODF_OFFSET);
+	reg |= (0 << MXC_CCM_CHSCCDR_ENET_CLK_SEL_OFFSET);
+	writel(reg, &imx_ccm->chsccdr);
+
+	/* Enable enet system clock */
+	reg = readl(&imx_ccm->CCGR3);
+	reg |= MXC_CCM_CCGR3_ENET_MASK;
+	writel(reg, &imx_ccm->CCGR3);
+#endif
 	return 0;
 }
 #endif
@@ -470,6 +599,7 @@ int enable_pcie_clock(void)
 	struct anatop_regs *anatop_regs =
 		(struct anatop_regs *)ANATOP_BASE_ADDR;
 	struct mxc_ccm_reg *ccm_regs = (struct mxc_ccm_reg *)CCM_BASE_ADDR;
+	u32 lvds1_clk_sel;
 
 	/*
 	 * Here be dragons!
@@ -479,17 +609,25 @@ int enable_pcie_clock(void)
 	 * marked as ANATOP_MISC1 is actually documented in the PMU section
 	 * of the datasheet as PMU_MISC1.
 	 *
-	 * Switch LVDS clock source to SATA (0xb), disable clock INPUT and
-	 * enable clock OUTPUT. This is important for PCI express link that
-	 * is clocked from the i.MX6.
+	 * Switch LVDS clock source to SATA (0xb) on mx6q/dl or PCI (0xa) on
+	 * mx6sx, disable clock INPUT and enable clock OUTPUT. This is important
+	 * for PCI express link that is clocked from the i.MX6.
 	 */
 #define ANADIG_ANA_MISC1_LVDSCLK1_IBEN		(1 << 12)
 #define ANADIG_ANA_MISC1_LVDSCLK1_OBEN		(1 << 10)
 #define ANADIG_ANA_MISC1_LVDS1_CLK_SEL_MASK	0x0000001F
+#define ANADIG_ANA_MISC1_LVDS1_CLK_SEL_PCIE_REF	0xa
+#define ANADIG_ANA_MISC1_LVDS1_CLK_SEL_SATA_REF	0xb
+
+	if (is_cpu_type(MXC_CPU_MX6SX))
+		lvds1_clk_sel = ANADIG_ANA_MISC1_LVDS1_CLK_SEL_PCIE_REF;
+	else
+		lvds1_clk_sel = ANADIG_ANA_MISC1_LVDS1_CLK_SEL_SATA_REF;
+
 	clrsetbits_le32(&anatop_regs->ana_misc1,
 			ANADIG_ANA_MISC1_LVDSCLK1_IBEN |
 			ANADIG_ANA_MISC1_LVDS1_CLK_SEL_MASK,
-			ANADIG_ANA_MISC1_LVDSCLK1_OBEN | 0xb);
+			ANADIG_ANA_MISC1_LVDSCLK1_OBEN | lvds1_clk_sel);
 
 	/* PCIe reference clock sourced from AXI. */
 	clrbits_le32(&ccm_regs->cbcmr, MXC_CCM_CBCMR_PCIE_AXI_CLK_SEL);
@@ -504,6 +642,33 @@ int enable_pcie_clock(void)
 			       BM_ANADIG_PLL_ENET_ENABLE_PCIE);
 }
 
+#ifdef CONFIG_SECURE_BOOT
+void hab_caam_clock_enable(unsigned char enable)
+{
+	u32 reg;
+
+	/* CG4 ~ CG6, CAAM clocks */
+	reg = __raw_readl(&imx_ccm->CCGR0);
+	if (enable)
+		reg |= (MXC_CCM_CCGR0_CAAM_WRAPPER_IPG_MASK |
+			MXC_CCM_CCGR0_CAAM_WRAPPER_ACLK_MASK |
+			MXC_CCM_CCGR0_CAAM_SECURE_MEM_MASK);
+	else
+		reg &= ~(MXC_CCM_CCGR0_CAAM_WRAPPER_IPG_MASK |
+			MXC_CCM_CCGR0_CAAM_WRAPPER_ACLK_MASK |
+			MXC_CCM_CCGR0_CAAM_SECURE_MEM_MASK);
+	__raw_writel(reg, &imx_ccm->CCGR0);
+
+	/* EMI slow clk */
+	reg = __raw_readl(&imx_ccm->CCGR6);
+	if (enable)
+		reg |= MXC_CCM_CCGR6_EMI_SLOW_MASK;
+	else
+		reg &= ~MXC_CCM_CCGR6_EMI_SLOW_MASK;
+	__raw_writel(reg, &imx_ccm->CCGR6);
+}
+#endif
+
 unsigned int mxc_get_clock(enum mxc_clock clk)
 {
 	switch (clk) {