kernel/git/stable/linux-stable.git/drivers/clk/sunxi, branch linux-3.16.y

sunxi: clk: Set sun6i-pll1 n_start = 1

2015-03-03T14:31:19+00:00

commit 76820fcf7aa5a418b69cb7bed31b62d1feb1d6ad upstream. For all pll-s on sun6i n == 0 means use a multiplier of 1, rather then 0 as it means on sun4i / sun5i / sun7i. n_start = 1 is already correctly set for sun6i pll6, but was missing for pll1, this commit fixes this. Cc: Chen-Yu Tsai Signed-off-by: Hans de Goede Signed-off-by: Maxime Ripard Signed-off-by: Luis Henriques

clk: sunxi: Support factor clocks with N factor starting not from 0

2015-03-03T14:30:52+00:00

commit 9a5e6c7eb5ccbb5f0d3a1dffce135f0a727f40e1 upstream. The PLLs on newer Allwinner SoC's, such as the A31 and A23, have a N multiplier factor that starts from 1, not 0. This patch adds an option to the factor clk driver's config data structures to specify the base value of N. Signed-off-by: Chen-Yu Tsai Acked-by: Maxime Ripard Signed-off-by: Maxime Ripard Signed-off-by: Luis Henriques

clk: sunxi: fix devm_ioremap_resource error detection code

2014-07-02T06:37:34+00:00

devm_ioremap_resource returns an ERR_PTR value, not NULL, on failure. A simplified version of the semantic match that finds this problem is as follows: // @@ expression e,e1; statement S; @@ *e = devm_ioremap_resource(...); if (!e1) S // Signed-off-by: Himangi Saraogi Acked-by: Julia Lawall Acked-by Boris BREZILLON Signed-off-by: Mike Turquette

clk: sunxi: add PRCM (Power/Reset/Clock Management) clks support

2014-06-11T08:25:02+00:00

The PRCM (Power/Reset/Clock Management) unit provides several clock devices: - AR100 clk: used to clock the Power Management co-processor - AHB0 clk: used to clock the AHB0 bus - APB0 clk and gates: used to clk peripherals connected to the APB0 bus Add support for these clks in a separate driver so that they can be probed as platform devices instead of registered during early init. This is needed to be able to probe PRCM MFD subdevices. Signed-off-by: Boris BREZILLON Acked-by: Maxime Ripard Signed-off-by: Emilio López

clk: sun6i: Protect SDRAM gating bit

2014-06-11T08:25:02+00:00

Prevent the SDRAM controller from being gated by force-enabling it in the machine code. Signed-off-by: Maxime Ripard Acked-by: Mike Turquette Signed-off-by: Emilio López

clk: sun6i: Protect CPU clock

2014-06-11T08:25:01+00:00

Right now, AHB is an indirect child clock of the CPU clock. If that happens to change, since the CPU clock has no other consumers declared in Linux, it would be shut down, which is not really a good idea. Prevent this by forcing it enabled. Signed-off-by: Maxime Ripard Acked-by: Mike Turquette Signed-off-by: Emilio López

clk: sunxi: Rework clock protection code

2014-06-11T08:25:01+00:00

Since we start to have a lot of clocks to protect, some of them in a few SoCs only, it becomes difficult to handle the clock protection without having to add per machine exceptions. Add per-SoC data to tell which clock to leave enabled. Signed-off-by: Maxime Ripard Acked-by: Mike Turquette Signed-off-by: Emilio López

clk: sunxi: Move the GMAC clock to a file of its own

2014-06-11T07:58:44+00:00

Since we have a folder of our own, we can actually make use of it by splitting the huge clock file into several sub drivers. The gmac clock is pretty easy to deal with, since it's pretty much isolated and doesn't have any dependency on the other clocks. Signed-off-by: Maxime Ripard Acked-by: Mike Turquette Signed-off-by: Emilio López

clk: sunxi: Move the 24M oscillator to a file of its own

2014-06-11T07:58:44+00:00

Since we have a folder of our own, we can actually make use of it by splitting the huge clock file into several sub drivers. The main oscillator is pretty easy to deal with, since it's pretty much isolated. Signed-off-by: Maxime Ripard Acked-by: Mike Turquette Signed-off-by: Emilio López

clk: sunxi: Remove calls to clk_put

2014-06-11T07:58:44+00:00

Callers of clk_put must disable the clock first. This also means that as long as the clock is enabled the driver should hold a reference to that clock. Hence, the call to clk_put here are bogus and should be removed. Signed-off-by: Maxime Ripard Acked-by: Mike Turquette Signed-off-by: Emilio López