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path: root/drivers/clk/keystone
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2013-12-10clk: keystone: gate: fix error handling on initGravatar Grygorii Strashko 1-4/+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>
2013-12-10clk: keystone: use clkod register bits for postdivGravatar Murali Karicheri 1-4/+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>
2013-10-07clk: keystone: Build Keystone clock driversGravatar Santosh Shilimkar 1-0/+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>
2013-10-07clk: keystone: Add gate control clock driverGravatar Santosh Shilimkar 1-0/+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>
2013-10-07clk: keystone: add Keystone PLL clock driverGravatar Santosh Shilimkar 1-0/+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>