diff options
| author | Christian Hemp <c.hemp@phytec.de> | 2013-07-23 10:29:25 +0200 |
|---|---|---|
| committer | Justin Waters <justin.waters@timesys.com> | 2013-11-07 12:19:35 -0500 |
| commit | c33d529516ac11c478dbc04a579f7c655f6d13c0 (patch) | |
| tree | bfaba9039314579a5dd48652efa308f6b0fd7440 | |
| parent | a8e4cd94de09eb2008c63129bd7237116864fced (diff) | |
phyFLEX-i.MX6: sata: disable sata phy when sata is not enabled
Add freescale SATA platform changes to phyFLEX-i.MX6
|ENGR00243339 imx: sata: disable sata phy when sata is not enabled
|
|In order to save power consumption, disable sata phy
|(enable PDDQ mode) in kernel level, if the sata module
|is not enabled in kernel configuration.
|
|Signed-off-by: Richard Zhu <r65037@freescale.com>
Signed-off-by: Christian Hemp <c.hemp@phytec.de>
| -rw-r--r-- | arch/arm/mach-mx6/board-mx6q_phyflex.c | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/arch/arm/mach-mx6/board-mx6q_phyflex.c b/arch/arm/mach-mx6/board-mx6q_phyflex.c index df6f405e8f15..075c43b5c0a2 100644 --- a/arch/arm/mach-mx6/board-mx6q_phyflex.c +++ b/arch/arm/mach-mx6/board-mx6q_phyflex.c @@ -546,11 +546,22 @@ static int mx6_phyflex_sata_init(struct device *dev, void __iomem *addr) tmpdata = clk_get_rate(clk) / 1000; clk_put(clk); +#ifdef CONFIG_SATA_AHCI_PLATFORM ret = sata_init(addr, tmpdata); if (ret == 0) return ret; +#else + usleep_range(1000, 2000); + /* AHCI PHY enter into PDDQ mode if the AHCI module is not enabled */ + tmpdata = readl(addr + PORT_PHY_CTL); + writel(tmpdata | PORT_PHY_CTL_PDDQ_LOC, addr + PORT_PHY_CTL); + pr_info("No AHCI save PWR: PDDQ %s\n", ((readl(addr + PORT_PHY_CTL) + >> 20) & 1) ? "enabled" : "disabled"); +#endif release_sata_clk: + /* disable SATA_PHY PLL */ + writel((readl(IOMUXC_GPR13) & ~0x2), IOMUXC_GPR13); clk_disable(sata_clk); put_sata_clk: clk_put(sata_clk); @@ -560,6 +571,7 @@ put_sata_clk: return ret; } +#ifdef CONFIG_SATA_AHCI_PLATFORM static void mx6_phyflex_sata_exit(struct device *dev) { clk_disable(sata_clk); @@ -573,6 +585,7 @@ static struct ahci_platform_data mx6_phyflex_sata_data = { .init = mx6_phyflex_sata_init, .exit = mx6_phyflex_sata_exit, }; +#endif static struct imx_asrc_platform_data imx_asrc_data = { .channel_bits = 4, @@ -1487,7 +1500,14 @@ static void __init mx6_phyflex_init(void) mx6_phyflex_init_usb(); mx6_phyflex_init_audio(); - imx6q_add_ahci(0, &mx6_phyflex_sata_data); + if (cpu_is_mx6q()) { +#ifdef CONFIG_SATA_AHCI_PLATFORM + imx6q_add_ahci(0, &mx6_phyflex_sata_data); +#else + mx6_phyflex_sata_init(NULL, + (void __iomem *)ioremap(MX6Q_SATA_BASE_ADDR, SZ_4K)); +#endif + } imx_asrc_data.asrc_core_clk = clk_get(NULL, "asrc_clk"); imx_asrc_data.asrc_audio_clk = clk_get(NULL, "asrc_serial_clk"); |