From mboxrd@z Thu Jan 1 00:00:00 1970 From: Bartosz Golaszewski Subject: [PATCH v2 06/14] ARM: davinci: da850: model the SATA refclk Date: Tue, 17 Jan 2017 13:26:08 +0100 Message-ID: <1484655976-25382-7-git-send-email-bgolaszewski@baylibre.com> References: <1484655976-25382-1-git-send-email-bgolaszewski@baylibre.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1484655976-25382-1-git-send-email-bgolaszewski@baylibre.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org To: Kevin Hilman , Sekhar Nori , Patrick Titiano , Michael Turquette , Tejun Heo , Rob Herring , Mark Rutland , Russell King , David Lechner Cc: linux-ide@vger.kernel.org, Bartosz Golaszewski , linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org List-Id: linux-ide@vger.kernel.org Register a dummy clock modelling the external SATA oscillator for da850 DT mode. For non-DT boot we don't register the clock - instead we rely on the default MPY value defined in the da850 ahci driver (as is done currently). Signed-off-by: Bartosz Golaszewski --- arch/arm/mach-davinci/da8xx-dt.c | 8 ++++++++ arch/arm/mach-davinci/devices-da8xx.c | 23 +++++++++++++++++++++++ arch/arm/mach-davinci/include/mach/da8xx.h | 1 + 3 files changed, 32 insertions(+) diff --git a/arch/arm/mach-davinci/da8xx-dt.c b/arch/arm/mach-davinci/da8xx-dt.c index b83e5d1..13137cb 100644 --- a/arch/arm/mach-davinci/da8xx-dt.c +++ b/arch/arm/mach-davinci/da8xx-dt.c @@ -61,6 +61,14 @@ static void __init da850_init_machine(void) pr_warn("%s: registering USB 1.1 PHY clock failed: %d", __func__, ret); + if (of_machine_is_compatible("ti,da850-evm") || + of_machine_is_compatible("ti,da850-lcdk")) { + ret = da850_register_sata_refclk(100000000); + if (ret) + pr_warn("%s: registering SATA_REFCLK clock failed: %d", + __func__, ret); + } + of_platform_default_populate(NULL, da850_auxdata_lookup, NULL); davinci_pm_init(); } diff --git a/arch/arm/mach-davinci/devices-da8xx.c b/arch/arm/mach-davinci/devices-da8xx.c index c2457b3..2bb5b69 100644 --- a/arch/arm/mach-davinci/devices-da8xx.c +++ b/arch/arm/mach-davinci/devices-da8xx.c @@ -24,6 +24,7 @@ #include #include #include +#include #include "cpuidle.h" #include "sram.h" @@ -1023,6 +1024,28 @@ int __init da8xx_register_spi_bus(int instance, unsigned num_chipselect) } #ifdef CONFIG_ARCH_DAVINCI_DA850 +static struct clk sata_refclk = { + .name = "sata_refclk", + .set_rate = davinci_simple_set_rate, +}; + +static struct clk_lookup sata_refclk_lookup = + CLK("ahci_da850", "refclk", &sata_refclk); + +int __init da850_register_sata_refclk(int rate) +{ + int ret; + + sata_refclk.rate = rate; + ret = clk_register(&sata_refclk); + if (ret) + return ret; + + clkdev_add(&sata_refclk_lookup); + + return 0; +} + static struct resource da850_sata_resources[] = { { .start = DA850_SATA_BASE, diff --git a/arch/arm/mach-davinci/include/mach/da8xx.h b/arch/arm/mach-davinci/include/mach/da8xx.h index 85ff218..7e46422 100644 --- a/arch/arm/mach-davinci/include/mach/da8xx.h +++ b/arch/arm/mach-davinci/include/mach/da8xx.h @@ -95,6 +95,7 @@ int da8xx_register_usb11(struct da8xx_ohci_root_hub *pdata); int da8xx_register_usb_refclkin(int rate); int da8xx_register_usb20_phy_clk(bool use_usb_refclkin); int da8xx_register_usb11_phy_clk(bool use_usb_refclkin); +int da850_register_sata_refclk(int rate); int da8xx_register_emac(void); int da8xx_register_uio_pruss(void); int da8xx_register_lcdc(struct da8xx_lcdc_platform_data *pdata); -- 2.9.3