From: Andrew Bresticker <abres...@chromium.org>
On Tegra210, hardware control of the SATA and XUSB pad PLLs must be
done during the UPHY enable sequence rather than the PLLE enable
sequence. Export functions to do this so that hardware control can
be enabled from the XUSB padctl driver.
Signed-off-by: Andrew Bresticker <abres...@chromium.org>
Signed-off-by: Rhyland Klein <rkl...@nvidia.com>
---
drivers/clk/tegra/clk-tegra210.c | 58 ++++++++++++++++++++++++++++++++++++++
include/linux/clk/tegra.h | 5 ++++
2 files changed, 63 insertions(+)
diff --git a/drivers/clk/tegra/clk-tegra210.c b/drivers/clk/tegra/clk-tegra210.c
index 3990b5624d3a..be9843f6140d 100644
--- a/drivers/clk/tegra/clk-tegra210.c
+++ b/drivers/clk/tegra/clk-tegra210.c
@@ -175,6 +175,19 @@
#define UTMIP_PLL_CFG1_FORCE_PLL_ENABLE_POWERDOWN BIT(14)
#define UTMIP_PLL_CFG1_FORCE_PLL_ACTIVE_POWERDOWN BIT(12)
+#define SATA_PLL_CFG0 0x490
+#define SATA_PLL_CFG0_PADPLL_RESET_SWCTL BIT(0)
+#define SATA_PLL_CFG0_PADPLL_USE_LOCKDET BIT(2)
+#define SATA_PLL_CFG0_PADPLL_SLEEP_IDDQ BIT(13)
+#define SATA_PLL_CFG0_SEQ_ENABLE BIT(24)
+
+#define XUSBIO_PLL_CFG0 0x51c
+#define XUSBIO_PLL_CFG0_PADPLL_RESET_SWCTL BIT(0)
+#define XUSBIO_PLL_CFG0_CLK_ENABLE_SWCTL BIT(2)
+#define XUSBIO_PLL_CFG0_PADPLL_USE_LOCKDET BIT(6)
+#define XUSBIO_PLL_CFG0_PADPLL_SLEEP_IDDQ BIT(13)
+#define XUSBIO_PLL_CFG0_SEQ_ENABLE BIT(24)
+
#define UTMIPLL_HW_PWRDN_CFG0 0x52c
#define UTMIPLL_HW_PWRDN_CFG0_UTMIPLL_LOCK BIT(31)
#define UTMIPLL_HW_PWRDN_CFG0_SEQ_START_STATE BIT(25)
@@ -415,6 +428,51 @@ static const char *mux_pllmcp_clkm[] = {
#define PLLU_MISC0_WRITE_MASK 0xbfffffff
#define PLLU_MISC1_WRITE_MASK 0x00000007
+void tegra210_xusb_pll_hw_control_enable(void)
+{
+ u32 val;
+
+ val = readl_relaxed(clk_base + XUSBIO_PLL_CFG0);
+ val &= ~(XUSBIO_PLL_CFG0_CLK_ENABLE_SWCTL |
+ XUSBIO_PLL_CFG0_PADPLL_RESET_SWCTL);
+ val |= XUSBIO_PLL_CFG0_PADPLL_USE_LOCKDET |
+ XUSBIO_PLL_CFG0_PADPLL_SLEEP_IDDQ;
+ writel_relaxed(val, clk_base + XUSBIO_PLL_CFG0);
+}
+EXPORT_SYMBOL_GPL(tegra210_xusb_pll_hw_control_enable);
+
+void tegra210_xusb_pll_hw_sequence_start(void)
+{
+ u32 val;
+
+ val = readl_relaxed(clk_base + XUSBIO_PLL_CFG0);
+ val |= XUSBIO_PLL_CFG0_SEQ_ENABLE;
+ writel_relaxed(val, clk_base + XUSBIO_PLL_CFG0);
+}
+EXPORT_SYMBOL_GPL(tegra210_xusb_pll_hw_sequence_start);
+
+void tegra210_sata_pll_hw_control_enable(void)
+{
+ u32 val;
+
+ val = readl_relaxed(clk_base + SATA_PLL_CFG0);
+ val &= ~SATA_PLL_CFG0_PADPLL_RESET_SWCTL;
+ val |= SATA_PLL_CFG0_PADPLL_USE_LOCKDET |
+ SATA_PLL_CFG0_PADPLL_SLEEP_IDDQ;
+ writel_relaxed(val, clk_base + SATA_PLL_CFG0);
+}
+EXPORT_SYMBOL_GPL(tegra210_sata_pll_hw_control_enable);
+
+void tegra210_sata_pll_hw_sequence_start(void)
+{
+ u32 val;
+
+ val = readl_relaxed(clk_base + SATA_PLL_CFG0);
+ val |= SATA_PLL_CFG0_SEQ_ENABLE;
+ writel_relaxed(val, clk_base + SATA_PLL_CFG0);
+}
+EXPORT_SYMBOL_GPL(tegra210_sata_pll_hw_sequence_start);
+
static inline void _pll_misc_chk_default(void __iomem *base,
struct tegra_clk_pll_params *params,
u8 misc_num, u32 default_val, u32 mask)
diff --git a/include/linux/clk/tegra.h b/include/linux/clk/tegra.h
index 19c4208f4752..26b2041cac61 100644
--- a/include/linux/clk/tegra.h
+++ b/include/linux/clk/tegra.h
@@ -120,4 +120,9 @@ static inline void tegra_cpu_clock_resume(void)
}
#endif
+extern void tegra210_xusb_pll_hw_control_enable(void);
+extern void tegra210_xusb_pll_hw_sequence_start(void);
+extern void tegra210_sata_pll_hw_control_enable(void);
+extern void tegra210_sata_pll_hw_sequence_start(void);
+
#endif /* __LINUX_CLK_TEGRA_H_ */
--
1.7.9.5
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