History log of /drivers/clk/shmobile/clk-rcar-gen2.c
Revision Date Author Comments
4abe240878db394b399a12a63f01324bcd65c547 06-Aug-2014 Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> clk: shmobile: add missing 0x0100 for SDCKCR

10cdfe9f327ab8d120cf6957e58c6203e3a53847
(clk: shmobile: Add R-Car Gen2 clocks support)
added R-Car Gen2 clock support via DT for v3.14.

But, cpg_sd01_div_table is missing
"0x0100: x 1/8" division ratio.
This patch fixes hidden bug.
It is based on R-Car H2 v0.7, R-Car M2 v0.9.

Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
Reported-by: Yusuke Goda <yusuke.goda.sx@renesas.com>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
365b01869bca1c9d5ecb05be7857739fa18a9b8c 31-Mar-2014 Ben Dooks <ben.dooks@codethink.co.uk> clk: shmobile: rcar-gen2: fix lb/sd0/sd1/sdh clock parent to pll1

The clock generator for rcar-gen2 has the lb, sdh, sd0 and sd1 clocks
parented to pll1_div2 where the hardware diagram shows these to be
directly fed from pll1.

This fixes the initial rate for sdh0 clock to be 97.5MHz instead of
the reported 48MHz where the manual says the default register values
are for 97.5MHz.

Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
d9120198ddef2c0b61ca6659ace41b7c1e7c8f08 28-Feb-2014 Benoit Cousson <bcousson@baylibre.com> clk: shmobile: rcar-gen2: Use kick bit to allow Z clock frequency change

The Z clock frequency change is effective only after setting the kick
bit located in the FRQCRB register.
Without that, the CA15 CPUs clock rate will never change.

Fix that by checking if the kick bit is cleared and enable it to make
the clock rate change effective. The bit is cleared automatically upon
completion.

Signed-off-by: Benoit Cousson <bcousson+renesas@baylibre.com>
Acked-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
4a9c3ce1d293fe67123102f0b6734d6067c665fd 07-Jan-2014 Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> clk: shmobile: rcar-gen2: Fix qspi divisor

The qspi clock divisor is incorrectly set to twice the value it should
have, possibly because it has been computed based on PLL1 as the clock
parent instead of PLL1 / 2 (the datasheets specifies the qspi nominal
frequencies, not the divisor values). Fix it.

This bug introduced in v3.14-rc1 breaks various devices on the Lager and
Kolesh shmobile boards and should thus be considered as a regression for
which a fix during the -rc series is appropriate.

Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
b29dd35909c4ac074e84e8e7000fe525fe33c1a1 07-Jan-2014 Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> clk: shmobile: rcar-gen2: Fix clock parent for all non-PLL clocks

The lb, qspi, sdh, sd0 and sd1 clocks have the PLL1 (divided by 2) as
their parent, not the main clock. Fix it.

This bug introduced in v3.14-rc1 breaks various devices on the Lager and
Kolesh shmobile boards and should thus be considered as a regression for
which a fix during the -rc series is appropriate.

Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
8510e7263ad9399e771e0f67517a0d5409390445 07-Jan-2014 Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> clk: shmobile: rcar-gen2: Fix qspi divisor

The qspi clock divisor is incorrectly set to twice the value it should
have, possibly because it has been computed based on PLL1 as the clock
parent instead of PLL1 / 2 (the datasheets specifies the qspi nominal
frequencies, not the divisor values). Fix it.

Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Tested-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
995a9190ac9ca85cc15d11d9566017e91c58a118 07-Jan-2014 Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> clk: shmobile: rcar-gen2: Fix clock parent all non-PLL clocks

The lb, qspi, sdh, sd0 and sd1 clocks have the PLL1 (divided by 2) as
their parent, not the main clock. Fix it.

Reported-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Tested-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
10cdfe9f327ab8d120cf6957e58c6203e3a53847 06-Nov-2013 Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> clk: shmobile: Add R-Car Gen2 clocks support

The R-Car Gen2 SoCs (R8A7790 and R8A7791) have several clocks that are
too custom to be supported in a generic driver. Those clocks can be
divided in two categories:

- Fixed rate clocks with multiplier and divisor set according to boot
mode configuration

- Custom divider clocks with SoC-specific divider values

This driver supports both.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Kumar Gala <galak@codeaurora.org>
Signed-off-by: Mike Turquette <mturquette@linaro.org>