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* clk: keystone: gate: fix clk_init_data initializationIvan Khoronzhuk2014-02-101-0/+1
| | | | | | | | | | | | | | | | The clk_init_data struct is allocated in the stack. All members of this struct should be initialized before using otherwise it will lead to unpredictable situation as it can contain garbage. Ultimately the clk->flag field contains garbage. In my case it leads that flag CLK_IGNORE_UNUSED is set for most of clocks. As result a bunch of unused clocks cannot be disabled. So initialize flags in this structure too. Cc: Mike Turquette <mturquette@linaro.org> Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@ti.com> Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
* clk: keystone: gate: fix error handling on initGrygorii Strashko2013-12-101-4/+8
| | | | | | | | | | | | This patch fixes Keystone gate control clock driver initialization path: 1) clk_register_psc() returns error code and not a pure pointer, hence its return value need to be checked using IS_ERR(clk) macro. 2) Mapped IO memory isn't unmapped in case of errors, hence fix it. Cc: Mike Turquette <mturquette@linaro.org Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com> Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
* clk: keystone: use clkod register bits for postdivMurali Karicheri2013-12-101-4/+20
| | | | | | | | | | | | | DDR3A/B, ARM and PA PLL controllers have clkod register bits for configuring postdiv values. So use it instead of using fixed post dividers for these pll controllers. Assume that if fixed-postdiv attribute is not present, use clkod register value for pistdiv. Also update the Documentation of bindings to reflect the same. Cc: Mike Turquette <mturquette@linaro.org Signed-off-by: Murali Karicheri <m-karicheri2@ti.com> Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
* clk: keystone: Build Keystone clock driversSantosh Shilimkar2013-10-081-0/+1
| | | | | | | | Now build the keystone common clock drivers. The build is made conditional based on COMMON_CLK_KEYSTONE Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Signed-off-by: Mike Turquette <mturquette@linaro.org>
* clk: keystone: Add gate control clock driverSantosh Shilimkar2013-10-081-0/+264
| | | | | | | | | Add the driver for the clock gate control which uses PSC (Power Sleep Controller) IP on Keystone 2 based SOCs. It is responsible for enabling and disabling of the clocks for different IPs present in the SoC. Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Signed-off-by: Mike Turquette <mturquette@linaro.org>
* clk: keystone: add Keystone PLL clock driverSantosh Shilimkar2013-10-081-0/+305
Add the driver for the PLL IPs found on Keystone 2 devices. The PLL IP typically has a multiplier, a divider and a post-divider. The PLL IPs like ARMPLL, DDRPLL and PAPLL are controlled by the memory mapped register where as the Main PLL is controlled by a PLL controller and memory map registers. Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com> Signed-off-by: Mike Turquette <mturquette@linaro.org>