kernel/linux.git/drivers/clk, branch v4.14.286

clk: at91: generated: consider range when calculating best rate

2022-05-25T06:41:20+00:00

[ Upstream commit d0031e6fbed955ff8d5f5bbc8fe7382482559cec ] clk_generated_best_diff() helps in finding the parent and the divisor to compute a rate closest to the required one. However, it doesn't take into account the request's range for the new rate. Make sure the new rate is within the required range. Fixes: 8a8f4bf0c480 ("clk: at91: clk-generated: create function to find best_diff") Signed-off-by: Codrin Ciubotariu Link: https://lore.kernel.org/r/20220413071318.244912-1-codrin.ciubotariu@microchip.com Reviewed-by: Claudiu Beznea Signed-off-by: Stephen Boyd Signed-off-by: Sasha Levin

clk: sunxi: sun9i-mmc: check return value after calling platform_get_resource()

2022-05-12T10:17:07+00:00

[ Upstream commit f58ca215cda1975f77b2b762903684a3c101bec9 ] It will cause null-ptr-deref if platform_get_resource() returns NULL, we need check the return value. Fixes: 7a6fca879f59 ("clk: sunxi: Add driver for A80 MMC config clocks/resets") Signed-off-by: Yang Yingliang Reviewed-by: Samuel Holland Signed-off-by: Jernej Skrabec Link: https://lore.kernel.org/r/20220421134308.2885094-1-yangyingliang@huawei.com Signed-off-by: Sasha Levin

clk: tegra: tegra124-emc: Fix missing put_device() call in emc_ensure_emc_driver

2022-04-20T07:08:20+00:00

[ Upstream commit 6d6ef58c2470da85a99119f74d34216c8074b9f0 ] The reference taken by 'of_find_device_by_node()' must be released when not needed anymore. Add the corresponding 'put_device()' in the error handling path. Fixes: 2db04f16b589 ("clk: tegra: Add EMC clock driver") Signed-off-by: Miaoqian Lin Acked-by: Thierry Reding Link: https://lore.kernel.org/r/20220112104501.30655-1-linmq006@gmail.com Signed-off-by: Stephen Boyd Signed-off-by: Sasha Levin

clk: clps711x: Terminate clk_div_table with sentinel element

2022-04-20T07:08:20+00:00

[ Upstream commit 8bed4ed5aa3431085d9d27afc35d684856460eda ] In order that the end of a clk_div_table can be detected, it must be terminated with a sentinel element (.div = 0). Fixes: 631c53478973d ("clk: Add CLPS711X clk driver") Signed-off-by: Jonathan Neuschäfer Link: https://lore.kernel.org/r/20220218000922.134857-5-j.neuschaefer@gmx.net Signed-off-by: Stephen Boyd Signed-off-by: Sasha Levin

clk: loongson1: Terminate clk_div_table with sentinel element

2022-04-20T07:08:20+00:00

[ Upstream commit 3eb00f89162e80083dfcaa842468b510462cfeaa ] In order that the end of a clk_div_table can be detected, it must be terminated with a sentinel element (.div = 0). Fixes: b4626a7f4892 ("CLK: Add Loongson1C clock support") Signed-off-by: Jonathan Neuschäfer Reviewed-by: Philippe Mathieu-Daudé Link: https://lore.kernel.org/r/20220218000922.134857-3-j.neuschaefer@gmx.net Signed-off-by: Stephen Boyd Signed-off-by: Sasha Levin

clk: qcom: clk-rcg2: Update the frac table for pixel clock

2022-04-20T07:08:19+00:00

[ Upstream commit b527358cb4cd58a8279c9062b0786f1fab628fdc ] Support the new numerator and denominator for pixel clock on SM8350 and support rgb101010, RGB888 use cases on SM8450. Fixes: 99cbd064b059f ("clk: qcom: Support display RCG clocks") Signed-off-by: Taniya Das Reviewed-by: Stephen Boyd Signed-off-by: Bjorn Andersson Link: https://lore.kernel.org/r/20220227175536.3131-2-tdas@codeaurora.org Signed-off-by: Sasha Levin

clk: uniphier: Fix fixed-rate initialization

2022-04-20T07:08:09+00:00

commit ca85a66710a8a1f6b0719397225c3e9ee0abb692 upstream. Fixed-rate clocks in UniPhier don't have any parent clocks, however, initial data "init.flags" isn't initialized, so it might be determined that there is a parent clock for fixed-rate clock. This sets init.flags to zero as initialization. Cc: Fixes: 734d82f4a678 ("clk: uniphier: add core support code for UniPhier clock driver") Signed-off-by: Kunihiko Hayashi Link: https://lore.kernel.org/r/1646808918-30899-1-git-send-email-hayashi.kunihiko@socionext.com Signed-off-by: Stephen Boyd Signed-off-by: Greg Kroah-Hartman

clk: bcm-2835: Remove rounding up the dividers

2022-01-27T08:00:49+00:00

[ Upstream commit 8ca011ef4af48a7af7b15afd8a4a44039dd04cea ] The driver, once it found a divider, tries to round it up by increasing the least significant bit of the fractional part by one when the round_up argument is set and there's a remainder. However, since it increases the divider it will actually reduce the clock rate below what we were asking for, leading to issues with clk_set_min_rate() that will complain that our rounded clock rate is below the minimum of the rate. Since the dividers are fairly precise already, let's remove that part so that we can have clk_set_min_rate() working. This is effectively a revert of 9c95b32ca093 ("clk: bcm2835: add a round up ability to the clock divisor"). Fixes: 9c95b32ca093 ("clk: bcm2835: add a round up ability to the clock divisor") Signed-off-by: Maxime Ripard Acked-by: Stephen Boyd Reviewed-by: Nicolas Saenz Julienne Tested-by: Nicolas Saenz Julienne # boot and basic functionality Tested-by: Michael Stapelberg Link: https://patchwork.freedesktop.org/patch/msgid/20210922125419.4125779-3-maxime@cerno.tech Signed-off-by: Sasha Levin

clk: bcm-2835: Pick the closest clock rate

2022-01-27T08:00:48+00:00

[ Upstream commit 5517357a4733d7cf7c17fc79d0530cfa47add372 ] The driver currently tries to pick the closest rate that is lower than the rate being requested. This causes an issue with clk_set_min_rate() since it actively checks for the rounded rate to be above the minimum that was just set. Let's change the logic a bit to pick the closest rate to the requested rate, no matter if it's actually higher or lower. Fixes: 6d18b8adbe67 ("clk: bcm2835: Support for clock parent selection") Signed-off-by: Maxime Ripard Acked-by: Stephen Boyd Reviewed-by: Nicolas Saenz Julienne Tested-by: Nicolas Saenz Julienne # boot and basic functionality Tested-by: Michael Stapelberg Link: https://patchwork.freedesktop.org/patch/msgid/20210922125419.4125779-2-maxime@cerno.tech Signed-off-by: Sasha Levin

clk: kirkwood: Fix a clocking boot regression

2021-09-22T09:45:23+00:00

commit aaedb9e00e5400220a8871180d23a83e67f29f63 upstream. Since a few kernel releases the Pogoplug 4 has crashed like this during boot: Unable to handle kernel NULL pointer dereference at virtual address 00000002 (...) [] (strlen) from [] (kstrdup+0x1c/0x4c) [] (kstrdup) from [] (__clk_register+0x44/0x37c) [] (__clk_register) from [] (clk_hw_register+0x20/0x44) [] (clk_hw_register) from [] (__clk_hw_register_mux+0x198/0x1e4) [] (__clk_hw_register_mux) from [] (clk_register_mux_table+0x5c/0x6c) [] (clk_register_mux_table) from [] (kirkwood_clk_muxing_setup.constprop.0+0x13c/0x1ac) [] (kirkwood_clk_muxing_setup.constprop.0) from [] (of_clk_init+0x12c/0x214) [] (of_clk_init) from [] (time_init+0x20/0x2c) [] (time_init) from [] (start_kernel+0x3dc/0x56c) [] (start_kernel) from [<00000000>] (0x0) Code: e3130020 1afffffb e12fff1e c08a1078 (e5d03000) This is because the "powersave" mux clock 0 was provided in an unterminated array, which is required by the loop in the driver: /* Count, allocate, and register clock muxes */ for (n = 0; desc[n].name;) n++; Here n will go out of bounds and then call clk_register_mux() on random memory contents after the mux clock. Fix this by terminating the array with a blank entry. Fixes: 105299381d87 ("cpufreq: kirkwood: use the powersave multiplexer") Cc: stable@vger.kernel.org Cc: Andrew Lunn Cc: Chris Packham Cc: Gregory CLEMENT Cc: Sebastian Hesselbarth Signed-off-by: Linus Walleij Link: https://lore.kernel.org/r/20210814235514.403426-1-linus.walleij@linaro.org Reviewed-by: Andrew Lunn Signed-off-by: Stephen Boyd Signed-off-by: Greg Kroah-Hartman